diff --git a/backend/app/api/v1/enhanced_scan.py b/backend/app/api/v1/enhanced_scan.py
index f596692..59307f2 100644
--- a/backend/app/api/v1/enhanced_scan.py
+++ b/backend/app/api/v1/enhanced_scan.py
@@ -156,6 +156,82 @@ def netbios_lookup(ip_address: str, timeout: int = 3):
         "hostname": hostname or "Unknown"
     }
 
+@router.post("/batch/vendor", summary="批量补全厂商信息")
+def batch_fill_vendor(
+    network_id: Optional[int] = None,
+    db: Session = Depends(get_db)
+):
+    """
+    对已有 MAC 地址但缺少厂商信息的 IP 批量补全厂商（使用 IEEE OUI 数据库）
+    """
+    from app.models.network import IPAddress as IPAddressModel
+
+    query = db.query(IPAddressModel).filter(
+        IPAddressModel.mac_address.isnot(None),
+        IPAddressModel.vendor.is_(None)
+    )
+    if network_id:
+        query = query.filter(IPAddressModel.network_id == network_id)
+
+    items = query.all()
+    updated_count = 0
+
+    for ip in items:
+        vendor = EnhancedScanService.get_mac_vendor(ip.mac_address)
+        if vendor:
+            ip.vendor = vendor
+            updated_count += 1
+
+    if updated_count > 0:
+        db.commit()
+
+    return {
+        "message": f"已补全 {updated_count} 条厂商信息",
+        "checked": len(items),
+        "updated": updated_count
+    }
+
+@router.post("/batch/hostname", summary="批量发现主机名")
+def batch_discover_hostname(
+    network_id: Optional[int] = None,
+    enable_dns: bool = True,
+    enable_netbios: bool = True,
+    db: Session = Depends(get_db)
+):
+    """
+    对已有 MAC 地址但缺少主机名的 IP 批量执行主机名发现（DNS PTR + NetBIOS）
+    """
+    from app.models.network import IPAddress as IPAddressModel
+
+    query = db.query(IPAddressModel).filter(
+        IPAddressModel.mac_address.isnot(None),
+        IPAddressModel.hostname.is_(None)
+    )
+    if network_id:
+        query = query.filter(IPAddressModel.network_id == network_id)
+
+    items = query.all()
+    updated_count = 0
+
+    for ip in items:
+        hostname = None
+        if enable_dns:
+            hostname = EnhancedScanService.reverse_dns_lookup(ip.ip_address, timeout=2)
+        if not hostname and enable_netbios:
+            hostname = EnhancedScanService.netbios_lookup(ip.ip_address, timeout=3)
+        if hostname:
+            ip.hostname = hostname
+            updated_count += 1
+
+    if updated_count > 0:
+        db.commit()
+
+    return {
+        "message": f"已发现 {updated_count} 条主机名",
+        "checked": len(items),
+        "updated": updated_count
+    }
+
 
 @router.get("/online/ips", summary="获取所有在线IP列表")
 def get_online_ips(
diff --git a/frontend/src/api/index.js b/frontend/src/api/index.js
index 97c4944..6ecd2fc 100644
--- a/frontend/src/api/index.js
+++ b/frontend/src/api/index.js
@@ -63,20 +63,29 @@ export const scanApi = {
     return api.post(`/scan/ping/${id}`)
   },
   // 综合扫描网段
-  // options: { enable_ping, enable_arp, enable_dns, timeout }
+  // options: { enable_ping, enable_arp, enable_dns, enable_netbios, timeout }
   // 单次调用覆盖全局 30s 超时，因为 /24 网段扫描要数分钟
   comprehensiveScan(id, options = {}) {
     const {
       enable_ping = true,
       enable_arp = true,
       enable_dns = true,
+      enable_netbios = true,
       timeout = 2
     } = options
     return api.post(`/scan/comprehensive/${id}`, {}, {
-      params: { enable_ping, enable_arp, enable_dns, timeout },
+      params: { enable_ping, enable_arp, enable_dns, enable_netbios, timeout },
       timeout: 600000  // 10 分钟，足以应付 /16 级别网段
     })
   },
+  // 批量补全厂商信息
+  batchFillVendor(params) {
+    return api.post('/scan/batch/vendor', {}, { params })
+  },
+  // 批量发现主机名
+  batchDiscoverHostname(params) {
+    return api.post('/scan/batch/hostname', {}, { params })
+  },
   // 单个IP扫描
   scanIP(ipAddress) {
     return api.post(`/scan/comprehensive/ip/${ipAddress}`)
diff --git a/frontend/src/views/IPs.vue b/frontend/src/views/IPs.vue
index 38f3a58..c6460dd 100644
--- a/frontend/src/views/IPs.vue
+++ b/frontend/src/views/IPs.vue
@@ -8,6 +8,10 @@
             <el-icon><Search /></el-icon>
             批量扫描
           </el-button>
+          <el-button type="warning" @click="batchFillVendor" :loading="vendorLoading">
+            <el-icon><Refresh /></el-icon>
+            补全厂商
+          </el-button>
         </div>
       </template>
 
@@ -176,6 +180,7 @@ const route = useRoute()
 const loading = ref(false)
 const submitting = ref(false)
 const scanning = ref(false)
+const vendorLoading = ref(false)
 const dialogVisible = ref(false)
 
 const tableData = ref([])
@@ -278,6 +283,24 @@ const startBatchScan = async () => {
   }
 }
 
+const batchFillVendor = async () => {
+  if (!filters.networkId) {
+    ElMessage.warning('请先选择网段')
+    return
+  }
+  vendorLoading.value = true
+  try {
+    const res = await scanApi.batchFillVendor({ network_id: filters.networkId })
+    ElMessage.success(res.message)
+    loadIPs()
+  } catch (error) {
+    ElMessage.error('补全厂商失败')
+    console.error('补全厂商错误:', error)
+  } finally {
+    vendorLoading.value = false
+  }
+}
+
 const editIP = (row) => {
   ipForm.id = row.id
   ipForm.ip_address = row.ip_address