diff --git a/frontend/src/app/router.tsx b/frontend/src/app/router.tsx
index b7707dd..696b0c7 100644
--- a/frontend/src/app/router.tsx
+++ b/frontend/src/app/router.tsx
@@ -2,6 +2,11 @@ import * as React from 'react'
 
 import { DesignSystemPreview } from '@/features/design-system/DesignSystemPreview'
 import { SolutionListPage } from '@/features/solutions/SolutionListPage'
+import { AuditLogPage } from '@/features/system/AuditLogPage'
+import { SystemMenusPage } from '@/features/system/SystemMenusPage'
+import { SystemRolesPage } from '@/features/system/SystemRolesPage'
+import { SystemUserGroupsPage } from '@/features/system/SystemUserGroupsPage'
+import { SystemUsersPage } from '@/features/system/SystemUsersPage'
 import { TicketCreatePage } from '@/features/tickets/TicketCreatePage'
 import { TicketDetailPage } from '@/features/tickets/TicketDetailPage'
 import { TicketListPage } from '@/features/tickets/TicketListPage'
@@ -24,6 +29,26 @@ export function Router() {
     return <DesignSystemPreview />
   }
 
+  if (route === '/audit') {
+    return <AuditLogPage />
+  }
+
+  if (route === '/system/users') {
+    return <SystemUsersPage />
+  }
+
+  if (route === '/system/user-groups') {
+    return <SystemUserGroupsPage />
+  }
+
+  if (route === '/system/roles') {
+    return <SystemRolesPage />
+  }
+
+  if (route === '/system/menus') {
+    return <SystemMenusPage />
+  }
+
   if (route === '/') {
     return <WorkbenchPage />
   }
diff --git a/frontend/src/features/system/AuditLogPage.tsx b/frontend/src/features/system/AuditLogPage.tsx
new file mode 100644
index 0000000..89ba591
--- /dev/null
+++ b/frontend/src/features/system/AuditLogPage.tsx
@@ -0,0 +1,90 @@
+import * as React from 'react'
+
+import { AppDataTable, type AppDataTableColumn } from '@/components/app/AppDataTable'
+import { AppEmptyState } from '@/components/app/AppEmptyState'
+import { AppFilterBar } from '@/components/app/AppFilterBar'
+import { AppPageHeader } from '@/components/app/AppPageHeader'
+import { Badge } from '@/components/ui/badge'
+import { Input } from '@/components/ui/input'
+import { formatDateTime } from '@/lib/format'
+
+import { listAuditLogs } from './api'
+import type { AuditLog } from './types'
+
+export function AuditLogPage() {
+  const [logs, setLogs] = React.useState<AuditLog[]>([])
+  const [query, setQuery] = React.useState('')
+  const [error, setError] = React.useState('')
+
+  React.useEffect(() => {
+    listAuditLogs()
+      .then((items) => {
+        setLogs(items)
+        setError('')
+      })
+      .catch((reason) => setError(reason instanceof Error ? reason.message : '加载失败'))
+  }, [])
+
+  const filteredLogs = logs.filter((log) => {
+    const keyword = query.trim().toLowerCase()
+    if (!keyword) return true
+    return `${log.module} ${log.action} ${log.target_type} ${log.target_id} ${log.result}`.toLowerCase().includes(keyword)
+  })
+
+  const columns: AppDataTableColumn<AuditLog>[] = [
+    {
+      key: 'created_at',
+      header: '时间',
+      cell: (log) => <span className="text-muted-foreground">{formatDateTime(log.created_at)}</span>
+    },
+    {
+      key: 'module',
+      header: '模块',
+      cell: (log) => <Badge variant="secondary">{log.module}</Badge>
+    },
+    {
+      key: 'action',
+      header: '动作',
+      cell: (log) => <span className="font-medium text-foreground">{log.action}</span>
+    },
+    {
+      key: 'target',
+      header: '对象',
+      cell: (log) => <span className="text-muted-foreground">{log.target_type} #{log.target_id || '-'}</span>
+    },
+    {
+      key: 'result',
+      header: '结果',
+      cell: (log) => <Badge variant={log.result === 'success' ? 'success' : 'destructive'}>{log.result}</Badge>
+    },
+    {
+      key: 'ip',
+      header: '来源 IP',
+      cell: (log) => <span className="text-muted-foreground">{log.ip_address || '-'}</span>
+    }
+  ]
+
+  return (
+    <main className="min-h-screen bg-background p-6 text-foreground">
+      <div className="mx-auto flex max-w-7xl flex-col gap-4">
+        <AppPageHeader title="操作审计" description="查看平台关键操作记录，辅助权限治理和问题追踪。" />
+
+        <AppFilterBar>
+          <Input placeholder="搜索模块、动作、对象或结果" value={query} onChange={(event) => setQuery(event.target.value)} />
+        </AppFilterBar>
+
+        {error ? <AppEmptyState title="无法加载审计日志" description={error} /> : null}
+        {!error ? (
+          <AppDataTable
+            columns={columns}
+            rows={filteredLogs}
+            getRowKey={(log) => log.id}
+            emptyTitle="暂无审计日志"
+            emptyDescription="产生关键操作后，审计记录会显示在这里。"
+            footer={<p className="text-sm text-muted-foreground">当前显示 {filteredLogs.length} 条记录</p>}
+          />
+        ) : null}
+      </div>
+    </main>
+  )
+}
diff --git a/frontend/src/features/system/SystemMenusPage.tsx b/frontend/src/features/system/SystemMenusPage.tsx
new file mode 100644
index 0000000..148ae6e
--- /dev/null
+++ b/frontend/src/features/system/SystemMenusPage.tsx
@@ -0,0 +1,103 @@
+import * as React from 'react'
+
+import { AppDataTable, type AppDataTableColumn } from '@/components/app/AppDataTable'
+import { AppEmptyState } from '@/components/app/AppEmptyState'
+import { AppPageHeader } from '@/components/app/AppPageHeader'
+import { Badge } from '@/components/ui/badge'
+import { Input } from '@/components/ui/input'
+import { Switch } from '@/components/ui/switch'
+
+import { listMenus, updateMenu } from './api'
+import type { SystemMenu } from './types'
+
+export function SystemMenusPage() {
+  const [menus, setMenus] = React.useState<SystemMenu[]>([])
+  const [query, setQuery] = React.useState('')
+  const [error, setError] = React.useState('')
+
+  const load = React.useCallback(async () => {
+    try {
+      setMenus(await listMenus())
+      setError('')
+    } catch (reason) {
+      setError(reason instanceof Error ? reason.message : '加载失败')
+    }
+  }, [])
+
+  React.useEffect(() => {
+    void load()
+  }, [load])
+
+  const filteredMenus = menus.filter((menu) => {
+    const keyword = query.trim().toLowerCase()
+    if (!keyword) return true
+    return `${menu.code} ${menu.title} ${menu.path} ${menu.permission_code}`.toLowerCase().includes(keyword)
+  })
+
+  async function toggleVisible(menu: SystemMenu, checked: boolean) {
+    await updateMenu(menu.id, { is_visible: checked })
+    await load()
+  }
+
+  async function toggleEnabled(menu: SystemMenu, checked: boolean) {
+    await updateMenu(menu.id, { is_enabled: checked })
+    await load()
+  }
+
+  const columns: AppDataTableColumn<SystemMenu>[] = [
+    {
+      key: 'title',
+      header: '菜单',
+      cell: (menu) => (
+        <div>
+          <p className="font-medium text-foreground">{menu.title}</p>
+          <p className="mt-1 text-sm text-muted-foreground">{menu.code}</p>
+        </div>
+      )
+    },
+    {
+      key: 'path',
+      header: '路径',
+      cell: (menu) => <span className="text-muted-foreground">{menu.path || '-'}</span>
+    },
+    {
+      key: 'permission',
+      header: '权限码',
+      cell: (menu) => menu.permission_code ? <Badge variant="secondary">{menu.permission_code}</Badge> : '-'
+    },
+    {
+      key: 'visible',
+      header: '展示',
+      cell: (menu) => <Switch checked={menu.is_visible} onCheckedChange={(checked) => void toggleVisible(menu, checked)} />
+    },
+    {
+      key: 'enabled',
+      header: '启用',
+      cell: (menu) => <Switch checked={menu.is_enabled} onCheckedChange={(checked) => void toggleEnabled(menu, checked)} />
+    }
+  ]
+
+  return (
+    <main className="min-h-screen bg-background p-6 text-foreground">
+      <div className="mx-auto flex max-w-7xl flex-col gap-4">
+        <AppPageHeader title="菜单权限" description="按后端菜单配置控制前端导航展示和可用状态。" />
+
+        <div className="rounded-lg border border-border bg-surface p-3">
+          <Input placeholder="搜索菜单、路径或权限码" value={query} onChange={(event) => setQuery(event.target.value)} />
+        </div>
+
+        {error ? <AppEmptyState title="无法加载菜单" description={error} /> : null}
+        {!error ? (
+          <AppDataTable
+            columns={columns}
+            rows={filteredMenus}
+            getRowKey={(menu) => menu.id}
+            emptyTitle="暂无菜单"
+            emptyDescription="执行治理初始化后，系统菜单会显示在这里。"
+            footer={<p className="text-sm text-muted-foreground">当前显示 {filteredMenus.length} 个菜单项</p>}
+          />
+        ) : null}
+      </div>
+    </main>
+  )
+}
diff --git a/frontend/src/features/system/SystemRolesPage.tsx b/frontend/src/features/system/SystemRolesPage.tsx
new file mode 100644
index 0000000..3d4e26b
--- /dev/null
+++ b/frontend/src/features/system/SystemRolesPage.tsx
@@ -0,0 +1,177 @@
+import * as React from 'react'
+
+import { AppDataTable, type AppDataTableColumn } from '@/components/app/AppDataTable'
+import { AppEmptyState } from '@/components/app/AppEmptyState'
+import { AppPageHeader } from '@/components/app/AppPageHeader'
+import { Badge } from '@/components/ui/badge'
+import { Button } from '@/components/ui/button'
+import { Checkbox } from '@/components/ui/checkbox'
+import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from '@/components/ui/dialog'
+import { Input } from '@/components/ui/input'
+
+import { createRole, listPermissions, listRoles, setRolePermissions } from './api'
+import type { Permission, RoleDetail } from './types'
+
+export function SystemRolesPage() {
+  const [roles, setRoles] = React.useState<RoleDetail[]>([])
+  const [permissions, setPermissions] = React.useState<Permission[]>([])
+  const [roleName, setRoleName] = React.useState('')
+  const [editingRole, setEditingRole] = React.useState<RoleDetail | null>(null)
+  const [error, setError] = React.useState('')
+
+  const load = React.useCallback(async () => {
+    try {
+      const [nextRoles, nextPermissions] = await Promise.all([listRoles(), listPermissions()])
+      setRoles(nextRoles)
+      setPermissions(nextPermissions)
+      setError('')
+    } catch (reason) {
+      setError(reason instanceof Error ? reason.message : '加载失败')
+    }
+  }, [])
+
+  React.useEffect(() => {
+    void load()
+  }, [load])
+
+  async function handleCreate(event: React.FormEvent<HTMLFormElement>) {
+    event.preventDefault()
+    await createRole({ name: roleName, permission_codes: [] })
+    setRoleName('')
+    await load()
+  }
+
+  const columns: AppDataTableColumn<RoleDetail>[] = [
+    {
+      key: 'name',
+      header: '角色',
+      cell: (role) => <span className="font-medium text-foreground">{role.name}</span>
+    },
+    {
+      key: 'permissions',
+      header: '权限数量',
+      cell: (role) => <Badge variant="info">{role.permission_codes.length}</Badge>
+    },
+    {
+      key: 'summary',
+      header: '权限摘要',
+      cell: (role) => (
+        <div className="flex max-w-[520px] flex-wrap gap-1">
+          {role.permission_codes.slice(0, 6).map((code) => <Badge key={code} variant="secondary">{code}</Badge>)}
+          {role.permission_codes.length > 6 ? <Badge variant="outline">+{role.permission_codes.length - 6}</Badge> : null}
+        </div>
+      )
+    },
+    {
+      key: 'actions',
+      header: '操作',
+      cell: (role) => <Button variant="ghost" onClick={() => setEditingRole(role)}>配置权限</Button>
+    }
+  ]
+
+  return (
+    <main className="min-h-screen bg-background p-6 text-foreground">
+      <div className="mx-auto flex max-w-7xl flex-col gap-4">
+        <AppPageHeader title="角色权限" description="定义后台角色，并将系统权限授予对应角色。" />
+
+        <form className="grid gap-3 rounded-lg border border-border bg-surface p-3 md:grid-cols-[minmax(0,360px)_auto]" onSubmit={handleCreate}>
+          <Input placeholder="角色名称" value={roleName} onChange={(event) => setRoleName(event.target.value)} required />
+          <Button type="submit">创建角色</Button>
+        </form>
+
+        {error ? <AppEmptyState title="无法加载角色" description={error} /> : null}
+        {!error ? (
+          <AppDataTable
+            columns={columns}
+            rows={roles}
+            getRowKey={(role) => role.id}
+            emptyTitle="暂无角色"
+            emptyDescription="创建角色后可继续配置权限。"
+          />
+        ) : null}
+
+        <RolePermissionDialog
+          role={editingRole}
+          permissions={permissions}
+          onClose={() => setEditingRole(null)}
+          onSaved={load}
+        />
+      </div>
+    </main>
+  )
+}
+
+function RolePermissionDialog({
+  role,
+  permissions,
+  onClose,
+  onSaved
+}: {
+  role: RoleDetail | null
+  permissions: Permission[]
+  onClose: () => void
+  onSaved: () => Promise<void>
+}) {
+  const [selected, setSelected] = React.useState<string[]>([])
+
+  React.useEffect(() => {
+    setSelected(role?.permission_codes ?? [])
+  }, [role])
+
+  const groupedPermissions = React.useMemo(() => {
+    return permissions.reduce<Record<string, Permission[]>>((groups, permission) => {
+      groups[permission.module] = groups[permission.module] ?? []
+      groups[permission.module].push(permission)
+      return groups
+    }, {})
+  }, [permissions])
+
+  async function handleSave() {
+    if (!role) return
+    await setRolePermissions(role.id, selected)
+    await onSaved()
+    onClose()
+  }
+
+  return (
+    <Dialog open={Boolean(role)} onOpenChange={(open) => !open && onClose()}>
+      <DialogContent className="sm:max-w-3xl">
+        <DialogHeader>
+          <DialogTitle>配置角色权限</DialogTitle>
+          <DialogDescription>{role?.name} 可访问的菜单和接口能力。</DialogDescription>
+        </DialogHeader>
+        <div className="grid max-h-[56vh] gap-4 overflow-auto pr-1">
+          {Object.entries(groupedPermissions).map(([module, modulePermissions]) => (
+            <section key={module} className="rounded-md border border-border p-3">
+              <p className="mb-3 text-sm font-medium text-foreground">{module}</p>
+              <div className="grid gap-2 md:grid-cols-2">
+                {modulePermissions.map((permission) => (
+                  <label key={permission.codename} className="flex items-start gap-2 text-sm">
+                    <Checkbox
+                      checked={selected.includes(permission.codename)}
+                      onCheckedChange={(checked) =>
+                        setSelected((current) =>
+                          checked
+                            ? [...current, permission.codename]
+                            : current.filter((code) => code !== permission.codename)
+                        )
+                      }
+                    />
+                    <span>
+                      <span className="block text-foreground">{permission.name}</span>
+                      <span className="text-xs text-muted-foreground">{permission.codename}</span>
+                    </span>
+                  </label>
+                ))}
+              </div>
+            </section>
+          ))}
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={onClose}>取消</Button>
+          <Button onClick={() => void handleSave()}>保存权限</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/frontend/src/features/system/SystemUserGroupsPage.tsx b/frontend/src/features/system/SystemUserGroupsPage.tsx
new file mode 100644
index 0000000..bdcf604
--- /dev/null
+++ b/frontend/src/features/system/SystemUserGroupsPage.tsx
@@ -0,0 +1,106 @@
+import * as React from 'react'
+
+import { AppDataTable, type AppDataTableColumn } from '@/components/app/AppDataTable'
+import { AppEmptyState } from '@/components/app/AppEmptyState'
+import { AppPageHeader } from '@/components/app/AppPageHeader'
+import { Badge } from '@/components/ui/badge'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import { Switch } from '@/components/ui/switch'
+import { formatDateTime } from '@/lib/format'
+
+import { createUserGroup, listUserGroups, updateUserGroup } from './api'
+import type { UserGroup } from './types'
+
+export function SystemUserGroupsPage() {
+  const [groups, setGroups] = React.useState<UserGroup[]>([])
+  const [form, setForm] = React.useState({ name: '', code: '', description: '' })
+  const [error, setError] = React.useState('')
+
+  const load = React.useCallback(async () => {
+    try {
+      setGroups(await listUserGroups())
+      setError('')
+    } catch (reason) {
+      setError(reason instanceof Error ? reason.message : '加载失败')
+    }
+  }, [])
+
+  React.useEffect(() => {
+    void load()
+  }, [load])
+
+  async function handleCreate(event: React.FormEvent<HTMLFormElement>) {
+    event.preventDefault()
+    await createUserGroup({ ...form, is_active: true })
+    setForm({ name: '', code: '', description: '' })
+    await load()
+  }
+
+  async function toggleActive(group: UserGroup, checked: boolean) {
+    await updateUserGroup(group.id, { is_active: checked })
+    await load()
+  }
+
+  const columns: AppDataTableColumn<UserGroup>[] = [
+    {
+      key: 'name',
+      header: '用户组',
+      cell: (group) => (
+        <div>
+          <p className="font-medium text-foreground">{group.name}</p>
+          <p className="mt-1 text-sm text-muted-foreground">{group.code}</p>
+        </div>
+      )
+    },
+    {
+      key: 'description',
+      header: '说明',
+      cell: (group) => <span className="text-muted-foreground">{group.description || '-'}</span>
+    },
+    {
+      key: 'status',
+      header: '状态',
+      cell: (group) => (
+        <div className="flex items-center gap-2">
+          <Switch checked={group.is_active} onCheckedChange={(checked) => void toggleActive(group, checked)} />
+          <Badge variant={group.is_active ? 'success' : 'secondary'}>{group.is_active ? '启用' : '停用'}</Badge>
+        </div>
+      )
+    },
+    {
+      key: 'updated_at',
+      header: '更新时间',
+      cell: (group) => (
+        <span className="text-muted-foreground">{group.updated_at ? formatDateTime(group.updated_at) : '-'}</span>
+      )
+    }
+  ]
+
+  return (
+    <main className="min-h-screen bg-background p-6 text-foreground">
+      <div className="mx-auto flex max-w-7xl flex-col gap-4">
+        <AppPageHeader title="用户组管理" description="按业务团队、系统域或支持队列组织用户。" />
+
+        <form className="grid gap-3 rounded-lg border border-border bg-surface p-3 md:grid-cols-[1fr_1fr_2fr_auto]" onSubmit={handleCreate}>
+          <Input placeholder="用户组名称" value={form.name} onChange={(event) => setForm({ ...form, name: event.target.value })} required />
+          <Input placeholder="编码" value={form.code} onChange={(event) => setForm({ ...form, code: event.target.value })} required />
+          <Input placeholder="说明" value={form.description} onChange={(event) => setForm({ ...form, description: event.target.value })} />
+          <Button type="submit">创建用户组</Button>
+        </form>
+
+        {error ? <AppEmptyState title="无法加载用户组" description={error} /> : null}
+        {!error ? (
+          <AppDataTable
+            columns={columns}
+            rows={groups}
+            getRowKey={(group) => group.id}
+            emptyTitle="暂无用户组"
+            emptyDescription="创建用户组后会显示在这里。"
+            footer={<p className="text-sm text-muted-foreground">共 {groups.length} 个用户组</p>}
+          />
+        ) : null}
+      </div>
+    </main>
+  )
+}
diff --git a/frontend/src/features/system/SystemUsersPage.tsx b/frontend/src/features/system/SystemUsersPage.tsx
new file mode 100644
index 0000000..6071d86
--- /dev/null
+++ b/frontend/src/features/system/SystemUsersPage.tsx
@@ -0,0 +1,256 @@
+import * as React from 'react'
+
+import { AppDataTable, type AppDataTableColumn } from '@/components/app/AppDataTable'
+import { AppEmptyState } from '@/components/app/AppEmptyState'
+import { AppFilterBar } from '@/components/app/AppFilterBar'
+import { AppPageHeader } from '@/components/app/AppPageHeader'
+import { Badge } from '@/components/ui/badge'
+import { Button } from '@/components/ui/button'
+import { Checkbox } from '@/components/ui/checkbox'
+import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from '@/components/ui/dialog'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { Switch } from '@/components/ui/switch'
+
+import { createUser, listRoles, listUserGroups, listUsers, setUserGroups, setUserRoles, updateUser } from './api'
+import type { RoleDetail, SystemUser, UserGroup } from './types'
+
+type UserForm = {
+  username: string
+  display_name: string
+  email: string
+  password: string
+}
+
+const emptyForm: UserForm = {
+  username: '',
+  display_name: '',
+  email: '',
+  password: ''
+}
+
+export function SystemUsersPage() {
+  const [users, setUsers] = React.useState<SystemUser[]>([])
+  const [roles, setRoles] = React.useState<RoleDetail[]>([])
+  const [groups, setGroups] = React.useState<UserGroup[]>([])
+  const [query, setQuery] = React.useState('')
+  const [form, setForm] = React.useState<UserForm>(emptyForm)
+  const [editingUser, setEditingUser] = React.useState<SystemUser | null>(null)
+  const [error, setError] = React.useState('')
+
+  const load = React.useCallback(async () => {
+    try {
+      const [nextUsers, nextRoles, nextGroups] = await Promise.all([listUsers(), listRoles(), listUserGroups()])
+      setUsers(nextUsers)
+      setRoles(nextRoles)
+      setGroups(nextGroups)
+      setError('')
+    } catch (reason) {
+      setError(reason instanceof Error ? reason.message : '加载失败')
+    }
+  }, [])
+
+  React.useEffect(() => {
+    void load()
+  }, [load])
+
+  const filteredUsers = users.filter((user) => {
+    const keyword = query.trim().toLowerCase()
+    if (!keyword) return true
+    return `${user.username} ${user.display_name} ${user.email}`.toLowerCase().includes(keyword)
+  })
+
+  async function handleCreateUser(event: React.FormEvent<HTMLFormElement>) {
+    event.preventDefault()
+    await createUser({ ...form, is_active: true })
+    setForm(emptyForm)
+    await load()
+  }
+
+  async function toggleUserActive(user: SystemUser, checked: boolean) {
+    await updateUser(user.id, { is_active: checked })
+    await load()
+  }
+
+  const columns: AppDataTableColumn<SystemUser>[] = [
+    {
+      key: 'user',
+      header: '用户',
+      cell: (user) => (
+        <div>
+          <p className="font-medium text-foreground">{user.display_name || user.username}</p>
+          <p className="mt-1 text-sm text-muted-foreground">{user.username}</p>
+        </div>
+      )
+    },
+    {
+      key: 'email',
+      header: '邮箱',
+      cell: (user) => <span className="text-muted-foreground">{user.email || '-'}</span>
+    },
+    {
+      key: 'roles',
+      header: '角色',
+      cell: (user) => (
+        <div className="flex max-w-[260px] flex-wrap gap-1">
+          {user.roles.length ? user.roles.map((role) => <Badge key={role.id} variant="secondary">{role.name}</Badge>) : '-'}
+        </div>
+      )
+    },
+    {
+      key: 'groups',
+      header: '用户组',
+      cell: (user) => (
+        <div className="flex max-w-[260px] flex-wrap gap-1">
+          {user.user_groups.length
+            ? user.user_groups.map((group) => <Badge key={group.id} variant="info">{group.name}</Badge>)
+            : '-'}
+        </div>
+      )
+    },
+    {
+      key: 'active',
+      header: '状态',
+      cell: (user) => (
+        <Switch
+          checked={user.is_active}
+          onClick={(event) => event.stopPropagation()}
+          onCheckedChange={(checked) => void toggleUserActive(user, checked)}
+        />
+      )
+    },
+    {
+      key: 'actions',
+      header: '操作',
+      cell: (user) => (
+        <Button
+          variant="ghost"
+          onClick={(event) => {
+            event.stopPropagation()
+            setEditingUser(user)
+          }}
+        >
+          授权
+        </Button>
+      )
+    }
+  ]
+
+  return (
+    <main className="min-h-screen bg-background p-6 text-foreground">
+      <div className="mx-auto flex max-w-7xl flex-col gap-4">
+        <AppPageHeader title="用户管理" description="维护平台账号、启用状态、角色和业务用户组。" />
+
+        <form className="grid gap-3 rounded-lg border border-border bg-surface p-3 md:grid-cols-[1fr_1fr_1fr_1fr_auto]" onSubmit={handleCreateUser}>
+          <Input placeholder="账号" value={form.username} onChange={(event) => setForm({ ...form, username: event.target.value })} required />
+          <Input placeholder="显示名称" value={form.display_name} onChange={(event) => setForm({ ...form, display_name: event.target.value })} />
+          <Input placeholder="邮箱" value={form.email} onChange={(event) => setForm({ ...form, email: event.target.value })} />
+          <Input placeholder="初始密码" type="password" value={form.password} onChange={(event) => setForm({ ...form, password: event.target.value })} required />
+          <Button type="submit">创建用户</Button>
+        </form>
+
+        <AppFilterBar>
+          <Input placeholder="搜索账号、姓名或邮箱" value={query} onChange={(event) => setQuery(event.target.value)} />
+        </AppFilterBar>
+
+        {error ? <AppEmptyState title="无法加载用户" description={error} /> : null}
+        {!error ? (
+          <AppDataTable
+            columns={columns}
+            rows={filteredUsers}
+            getRowKey={(user) => user.id}
+            emptyTitle="暂无用户"
+            emptyDescription="创建账号后会显示在这里。"
+            footer={<p className="text-sm text-muted-foreground">当前显示 {filteredUsers.length} 个用户</p>}
+          />
+        ) : null}
+
+        <UserAccessDialog
+          user={editingUser}
+          roles={roles}
+          groups={groups}
+          onClose={() => setEditingUser(null)}
+          onSaved={load}
+        />
+      </div>
+    </main>
+  )
+}
+
+function UserAccessDialog({
+  user,
+  roles,
+  groups,
+  onClose,
+  onSaved
+}: {
+  user: SystemUser | null
+  roles: RoleDetail[]
+  groups: UserGroup[]
+  onClose: () => void
+  onSaved: () => Promise<void>
+}) {
+  const [roleIds, setRoleIds] = React.useState<number[]>([])
+  const [groupIds, setGroupIds] = React.useState<number[]>([])
+
+  React.useEffect(() => {
+    setRoleIds(user?.roles.map((role) => role.id) ?? [])
+    setGroupIds(user?.user_groups.map((group) => group.id) ?? [])
+  }, [user])
+
+  async function handleSave() {
+    if (!user) return
+    await Promise.all([setUserRoles(user.id, roleIds), setUserGroups(user.id, groupIds)])
+    await onSaved()
+    onClose()
+  }
+
+  return (
+    <Dialog open={Boolean(user)} onOpenChange={(open) => !open && onClose()}>
+      <DialogContent className="sm:max-w-xl">
+        <DialogHeader>
+          <DialogTitle>用户授权</DialogTitle>
+          <DialogDescription>为 {user?.display_name || user?.username} 分配角色和用户组。</DialogDescription>
+        </DialogHeader>
+        <div className="grid gap-4 md:grid-cols-2">
+          <div className="grid gap-2">
+            <Label>角色</Label>
+            <div className="grid max-h-64 gap-2 overflow-auto rounded-md border border-border p-3">
+              {roles.map((role) => (
+                <label key={role.id} className="flex items-center gap-2 text-sm">
+                  <Checkbox
+                    checked={roleIds.includes(role.id)}
+                    onCheckedChange={(checked) =>
+                      setRoleIds((current) => checked ? [...current, role.id] : current.filter((id) => id !== role.id))
+                    }
+                  />
+                  <span>{role.name}</span>
+                </label>
+              ))}
+            </div>
+          </div>
+          <div className="grid gap-2">
+            <Label>用户组</Label>
+            <div className="grid max-h-64 gap-2 overflow-auto rounded-md border border-border p-3">
+              {groups.map((group) => (
+                <label key={group.id} className="flex items-center gap-2 text-sm">
+                  <Checkbox
+                    checked={groupIds.includes(group.id)}
+                    onCheckedChange={(checked) =>
+                      setGroupIds((current) => checked ? [...current, group.id] : current.filter((id) => id !== group.id))
+                    }
+                  />
+                  <span>{group.name}</span>
+                </label>
+              ))}
+            </div>
+          </div>
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={onClose}>取消</Button>
+          <Button onClick={() => void handleSave()}>保存授权</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/frontend/src/features/system/api.ts b/frontend/src/features/system/api.ts
new file mode 100644
index 0000000..88970cf
--- /dev/null
+++ b/frontend/src/features/system/api.ts
@@ -0,0 +1,133 @@
+import { apiRequest } from '@/lib/api'
+
+import type { AuditLog, Permission, RoleDetail, SystemMenu, SystemUser, UserGroup } from './types'
+
+export function listUsers() {
+  return apiRequest<SystemUser[]>('/accounts/users')
+}
+
+export function createUser(payload: {
+  username: string
+  display_name: string
+  email: string
+  password: string
+  is_active: boolean
+}) {
+  return apiRequest<SystemUser>('/accounts/users', {
+    method: 'POST',
+    body: JSON.stringify(payload)
+  })
+}
+
+export function updateUser(
+  userId: number,
+  payload: {
+    display_name?: string
+    email?: string
+    is_active?: boolean
+  }
+) {
+  return apiRequest<SystemUser>(`/accounts/users/${userId}`, {
+    method: 'PATCH',
+    body: JSON.stringify(payload)
+  })
+}
+
+export function setUserRoles(userId: number, roleIds: number[]) {
+  return apiRequest<SystemUser>(`/accounts/users/${userId}/roles`, {
+    method: 'POST',
+    body: JSON.stringify({ role_ids: roleIds })
+  })
+}
+
+export function setUserGroups(userId: number, userGroupIds: number[]) {
+  return apiRequest<SystemUser>(`/accounts/users/${userId}/user-groups`, {
+    method: 'POST',
+    body: JSON.stringify({ user_ids: userGroupIds })
+  })
+}
+
+export function listUserGroups() {
+  return apiRequest<UserGroup[]>('/accounts/user-groups')
+}
+
+export function createUserGroup(payload: {
+  name: string
+  code: string
+  description: string
+  is_active: boolean
+}) {
+  return apiRequest<UserGroup>('/accounts/user-groups', {
+    method: 'POST',
+    body: JSON.stringify(payload)
+  })
+}
+
+export function updateUserGroup(
+  groupId: number,
+  payload: {
+    name?: string
+    description?: string
+    is_active?: boolean
+  }
+) {
+  return apiRequest<UserGroup>(`/accounts/user-groups/${groupId}`, {
+    method: 'PATCH',
+    body: JSON.stringify(payload)
+  })
+}
+
+export function listRoles() {
+  return apiRequest<RoleDetail[]>('/accounts/roles')
+}
+
+export function createRole(payload: { name: string; permission_codes: string[] }) {
+  return apiRequest<RoleDetail>('/accounts/roles', {
+    method: 'POST',
+    body: JSON.stringify(payload)
+  })
+}
+
+export function updateRole(roleId: number, payload: { name?: string }) {
+  return apiRequest<RoleDetail>(`/accounts/roles/${roleId}`, {
+    method: 'PATCH',
+    body: JSON.stringify(payload)
+  })
+}
+
+export function setRolePermissions(roleId: number, permissionCodes: string[]) {
+  return apiRequest<RoleDetail>(`/accounts/roles/${roleId}/permissions`, {
+    method: 'POST',
+    body: JSON.stringify({ permission_codes: permissionCodes })
+  })
+}
+
+export function listPermissions() {
+  return apiRequest<Permission[]>('/accounts/permissions')
+}
+
+export function listMenus() {
+  return apiRequest<SystemMenu[]>('/accounts/menus')
+}
+
+export function updateMenu(
+  menuId: number,
+  payload: {
+    title?: string
+    path?: string
+    icon?: string
+    permission_code?: string
+    is_visible?: boolean
+    is_enabled?: boolean
+    sort_order?: number
+  }
+) {
+  return apiRequest<SystemMenu>(`/accounts/menus/${menuId}`, {
+    method: 'PATCH',
+    body: JSON.stringify(payload)
+  })
+}
+
+export function listAuditLogs() {
+  return apiRequest<AuditLog[]>('/audit/operation-logs')
+}
diff --git a/frontend/src/features/system/types.ts b/frontend/src/features/system/types.ts
new file mode 100644
index 0000000..52b6b92
--- /dev/null
+++ b/frontend/src/features/system/types.ts
@@ -0,0 +1,63 @@
+export type RoleSummary = {
+  id: number
+  name: string
+}
+
+export type UserGroup = {
+  id: number
+  name: string
+  code: string
+  description: string
+  is_active: boolean
+  created_at?: string | null
+  updated_at?: string | null
+}
+
+export type SystemUser = {
+  id: number
+  username: string
+  display_name: string
+  email: string
+  is_active: boolean
+  is_staff: boolean
+  is_superuser: boolean
+  roles: RoleSummary[]
+  user_groups: UserGroup[]
+}
+
+export type Permission = {
+  codename: string
+  name: string
+  module: string
+}
+
+export type RoleDetail = {
+  id: number
+  name: string
+  permission_codes: string[]
+}
+
+export type SystemMenu = {
+  id: number
+  code: string
+  title: string
+  path: string
+  icon: string
+  permission_code: string
+  is_visible: boolean
+  is_enabled: boolean
+  children: SystemMenu[]
+}
+
+export type AuditLog = {
+  id: number
+  module: string
+  action: string
+  target_type: string
+  target_id: string
+  request_snapshot: Record<string, unknown>
+  result: string
+  ip_address: string | null
+  user_agent: string
+  created_at: string
+}