diff --git a/frontend/src/pages/Contracts.tsx b/frontend/src/pages/Contracts.tsx
index a55cb84..832a86d 100644
--- a/frontend/src/pages/Contracts.tsx
+++ b/frontend/src/pages/Contracts.tsx
@@ -4,6 +4,7 @@ import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import { Plus, Search, Paperclip, Trash2, X, FileText, Download } from 'lucide-react'
 import { toast } from 'sonner'
 import { rosterApi, employeeApi, attachmentApi } from '../lib/api-services'
+import api from '../lib/api'
 import Card from '../components/ui/Card'
 import Button from '../components/ui/Button'
 import { Input, Label, Select } from '../components/ui/Input'
@@ -217,6 +218,20 @@ function AddEmployeeModal({ open, onClose, onSubmit, loading, error }: {
   loading: boolean
   error: any
 }) {
+  // 拉取组织架构部门列表，用于部门下拉选择
+  const { data: departments = [] } = useQuery({
+    queryKey: ['departments'],
+    queryFn: () => api.get('/departments').then(r => r.data),
+  })
+  // 构建部门树形下拉选项（带层级缩进）
+  const deptOptions: { id: string; label: string; level: number }[] = []
+  const buildDeptOptions = (items: any[], parentId: string | null, level: number) => {
+    items.filter(d => d.parentId === parentId).sort((a, b) => a.sortOrder - b.sortOrder).forEach(d => {
+      deptOptions.push({ id: d.id, label: d.name, level })
+      buildDeptOptions(items, d.id, level + 1)
+    })
+  }
+  buildDeptOptions(departments, null, 0)
   const [form, setForm] = useState({
     name: '',
     department: '',
@@ -280,7 +295,12 @@ function AddEmployeeModal({ open, onClose, onSubmit, loading, error }: {
           </div>
           <div>
             <Label>部门 *</Label>
-            <Input value={form.department} onChange={(e) => setForm({ ...form, department: e.target.value })} placeholder="如：技术部" />
+            <Select value={form.department} onChange={(e) => setForm({ ...form, department: e.target.value })}>
+              <option value="">请选择部门</option>
+              {deptOptions.map(d => (
+                <option key={d.id} value={d.label}>{'　'.repeat(d.level)}{d.label}</option>
+              ))}
+            </Select>
           </div>
         </div>
 
diff --git a/frontend/src/pages/roster/BasicInfo.tsx b/frontend/src/pages/roster/BasicInfo.tsx
index be9710f..08b9a3c 100644
--- a/frontend/src/pages/roster/BasicInfo.tsx
+++ b/frontend/src/pages/roster/BasicInfo.tsx
@@ -5,6 +5,7 @@ import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
 import { attachmentApi, employeeApi, socialInsuranceApi } from '../../lib/api-services'
 import { useConfirm } from '../../hooks/useConfirm'
 import { copyToClipboard } from '../../lib/clipboard'
+import api from '../../lib/api'
 import Card from "../../components/ui/Card"
 import Button from "../../components/ui/Button"
 import { Input, Label, Select } from "../../components/ui/Input"
@@ -58,6 +59,21 @@ export default function BasicInfo({ profile, employeeId, attachments }: { profil
     return `${(bytes / 1024 / 1024).toFixed(1)}MB`
   }
 
+  // 拉取组织架构部门列表，用于部门下拉选择
+  const { data: departments = [] } = useQuery({
+    queryKey: ['departments'],
+    queryFn: () => api.get('/departments').then(r => r.data),
+  })
+  // 构建部门树形下拉选项（带层级缩进）
+  const deptOptions: { id: string; label: string; level: number }[] = []
+  const buildDeptOptions = (items: any[], parentId: string | null, level: number) => {
+    items.filter(d => d.parentId === parentId).sort((a, b) => a.sortOrder - b.sortOrder).forEach(d => {
+      deptOptions.push({ id: d.id, label: d.name, level })
+      buildDeptOptions(items, d.id, level + 1)
+    })
+  }
+  buildDeptOptions(departments, null, 0)
+
   const [form, setForm] = useState({
     department: profile.department || '',
     position: profile.position || '',
@@ -346,7 +362,7 @@ export default function BasicInfo({ profile, employeeId, attachments }: { profil
         <div className="grid md:grid-cols-2 gap-3">
           <div><Label>姓名（不可编辑）</Label><Input value={profile.name} disabled /></div>
           <div><Label>证件号码（不可编辑）</Label><Input value={profile.idCardNumber || ''} disabled /></div>
-          <div><Label>部门</Label><Input value={form.department} onChange={(e) => setForm({ ...form, department: e.target.value })} /></div>
+          <div><Label>部门</Label><Select value={form.department} onChange={(e) => setForm({ ...form, department: e.target.value })}><option value="">请选择部门</option>{deptOptions.map(d => <option key={d.id} value={d.label}>{'　'.repeat(d.level)}{d.label}</option>)}</Select></div>
           <div><Label>性别</Label><Select value={form.gender} onChange={(e) => setForm({ ...form, gender: e.target.value as '男' | '女' })}><option value="男">男</option><option value="女">女</option></Select></div>
           {form.gender === '女' && (
             <div><Label>女性岗位类型</Label><Select value={form.femaleWorkerType} onChange={(e) => setForm({ ...form, femaleWorkerType: e.target.value as '' | 'CADRE' | 'WORKER' })}><option value="">未选择</option><option value="CADRE">干部/管理岗</option><option value="WORKER">工人/操作岗</option></Select></div>
diff --git a/frontend/src/pages/roster/modals.tsx b/frontend/src/pages/roster/modals.tsx
index d6cb15a..2ca5158 100644
--- a/frontend/src/pages/roster/modals.tsx
+++ b/frontend/src/pages/roster/modals.tsx
@@ -408,6 +408,20 @@ export function RehireModal({ employee, onClose, onSubmit, loading, error }: {
     },
     staleTime: Infinity,
   })
+  // 拉取组织架构部门列表，用于部门下拉选择
+  const { data: departments = [] } = useQuery({
+    queryKey: ['departments'],
+    queryFn: () => api.get('/departments').then(r => r.data),
+  })
+  // 构建部门树形下拉选项（带层级缩进）
+  const deptOptions: { id: string; label: string; level: number }[] = []
+  const buildDeptOptions = (items: any[], parentId: string | null, level: number) => {
+    items.filter(d => d.parentId === parentId).sort((a, b) => a.sortOrder - b.sortOrder).forEach(d => {
+      deptOptions.push({ id: d.id, label: d.name, level })
+      buildDeptOptions(items, d.id, level + 1)
+    })
+  }
+  buildDeptOptions(departments, null, 0)
   const defaultEndDate = (() => {
     const d = new Date()
     d.setFullYear(d.getFullYear() + 3)
@@ -543,7 +557,12 @@ export function RehireModal({ employee, onClose, onSubmit, loading, error }: {
           </div>
           <div>
             <Label>部门 *</Label>
-            <Input value={form.department} onChange={(e) => setForm({ ...form, department: e.target.value })} placeholder="如：技术部" />
+            <Select value={form.department} onChange={(e) => setForm({ ...form, department: e.target.value })}>
+              <option value="">请选择部门</option>
+              {deptOptions.map(d => (
+                <option key={d.id} value={d.label}>{'　'.repeat(d.level)}{d.label}</option>
+              ))}
+            </Select>
           </div>
         </div>
         <div>
@@ -665,6 +684,20 @@ export function AddEmployeeModal({ onClose, onSubmit, loading, error }: {
     },
     staleTime: Infinity,
   })
+  // 拉取组织架构部门列表，用于部门下拉选择
+  const { data: departments = [] } = useQuery({
+    queryKey: ['departments'],
+    queryFn: () => api.get('/departments').then(r => r.data),
+  })
+  // 构建部门树形下拉选项（带层级缩进）
+  const deptOptions: { id: string; label: string; level: number }[] = []
+  const buildDeptOptions = (items: any[], parentId: string | null, level: number) => {
+    items.filter(d => d.parentId === parentId).sort((a, b) => a.sortOrder - b.sortOrder).forEach(d => {
+      deptOptions.push({ id: d.id, label: d.name, level })
+      buildDeptOptions(items, d.id, level + 1)
+    })
+  }
+  buildDeptOptions(departments, null, 0)
   const defaultEndDate = (() => {
     const d = new Date()
     d.setFullYear(d.getFullYear() + 3)
@@ -872,7 +905,7 @@ export function AddEmployeeModal({ onClose, onSubmit, loading, error }: {
         {/* 基本信息 */}
         <div className="grid grid-cols-4 gap-4">
           <div><Label>姓名 *</Label><Input value={form.name} onChange={(e) => setForm({ ...form, name: e.target.value })} placeholder="员工姓名" /></div>
-          <div><Label>部门 *</Label><Input value={form.department} onChange={(e) => setForm({ ...form, department: e.target.value })} placeholder="如：技术部" /></div>
+          <div><Label>部门 *</Label><Select value={form.department} onChange={(e) => setForm({ ...form, department: e.target.value })}><option value="">请选择部门</option>{deptOptions.map(d => <option key={d.id} value={d.label}>{'　'.repeat(d.level)}{d.label}</option>)}</Select></div>
           <div><Label>职务/岗位</Label><Input value={form.position} onChange={(e) => setForm({ ...form, position: e.target.value })} placeholder="如：前端工程师" /></div>
           <div><Label>证件号码 *</Label><Input value={form.idCardNumber} onChange={(e) => handleIdCardChange(e.target.value)} placeholder="18位" maxLength={18} /></div>
           {idCardDuplicate?.exists && (