diff --git a/backend/src/routes/import.routes.ts b/backend/src/routes/import.routes.ts
index 4b797fa..6da98a2 100644
--- a/backend/src/routes/import.routes.ts
+++ b/backend/src/routes/import.routes.ts
@@ -267,6 +267,34 @@ router.post('/excel', authMiddleware, requireAdmin, upload.single('file'), async
             if (idCheck.upgraded) idCard = idCheck.upgraded
           }
 
+          // 同企业内身份证查重
+          if (idCard) {
+            const idCardExists = await prisma.employee.findFirst({
+              where: { orgId, idCardHash: sha256(idCard) },
+              select: { id: true, name: true },
+            })
+            if (idCardExists) {
+              result.skipped++
+              result.errors.push(`员工第${i + 2}行：证件号码已存在（${idCardExists.name}），跳过`)
+              result.details.push({ sheet: '员工信息', row: i + 2, name, status: 'skipped', message: '证件号码已存在' })
+              continue
+            }
+          }
+          // 同企业内手机号查重
+          const importPhone = val(getField(r, '手机号'))
+          if (importPhone) {
+            const phoneExists = await prisma.employee.findFirst({
+              where: { orgId, phone: importPhone },
+              select: { id: true, name: true },
+            })
+            if (phoneExists) {
+              result.skipped++
+              result.errors.push(`员工第${i + 2}行：手机号已存在（${phoneExists.name}），跳过`)
+              result.details.push({ sheet: '员工信息', row: i + 2, name, status: 'skipped', message: '手机号已存在' })
+              continue
+            }
+          }
+
           // 社保基数：值为 0 或「无」表示不参保
           const socialInsBaseVal = num(getField(r, '社保基数'))
           const socialInsOptOut = val(getField(r, '社保基数')) === '无' || val(getField(r, '社保基数')) === '不缴'
diff --git a/backend/src/services/contract.service.ts b/backend/src/services/contract.service.ts
index 68362a5..808deeb 100644
--- a/backend/src/services/contract.service.ts
+++ b/backend/src/services/contract.service.ts
@@ -536,6 +536,27 @@ export async function updateEmployee(orgId: string, id: string, data: any) {
     throw { code: 'NOT_FOUND', message: '员工不存在' }
   }
 
+  // 手机号查重（同组织内排除自身，phone 唯一影响员工端登录）
+  if (data.phone !== undefined && data.phone) {
+    const phoneExists = await prisma.employee.findFirst({
+      where: { orgId, phone: data.phone, NOT: { id } },
+      select: { id: true, name: true, department: true, status: true },
+    })
+    if (phoneExists) {
+      throw { code: 'DUPLICATE_PHONE', message: `手机号已存在：${phoneExists.name}（${phoneExists.department}），同企业内手机号不可重复` }
+    }
+  }
+  // 身份证查重（同组织内排除自身）
+  if (data.idCardNumber !== undefined && data.idCardNumber) {
+    const idCardExists = await prisma.employee.findFirst({
+      where: { orgId, idCardHash: sha256(data.idCardNumber), NOT: { id } },
+      select: { id: true, name: true, department: true, status: true },
+    })
+    if (idCardExists) {
+      throw { code: 'DUPLICATE_ID_CARD', message: `证件号码已存在：${idCardExists.name}（${idCardExists.department}），同企业内身份证号不可重复` }
+    }
+  }
+
   const updateData: any = {}
   if (data.name !== undefined) updateData.name = data.name
   if (data.department !== undefined) updateData.department = data.department