diff --git a/client/src/views/customer/topology/index.vue b/client/src/views/customer/topology/index.vue
index 6a8ce0e..091afb4 100644
--- a/client/src/views/customer/topology/index.vue
+++ b/client/src/views/customer/topology/index.vue
@@ -159,6 +159,16 @@
 						<a-form-item label="所属建筑" name="buildingId">
 							<a-select v-model:value="formData.buildingId" :options="buildingOptions" :not-found-content="null" />
 						</a-form-item>
+						<a-form-item label="所属客户部门" name="deptId">
+							<a-select
+								v-model:value="formData.deptId"
+								:options="departmentOptions"
+								:loading="departmentLoading"
+								allow-clear
+								:not-found-content="departmentLoading ? null : (departmentOptions.length ? null : '暂无部门')"
+								placeholder="请选择所属客户部门"
+							/>
+						</a-form-item>
 						<a-form-item label="房间编码" name="roomCode">
 							<a-input v-model:value="formData.roomCode" placeholder="请输入房间编码" maxlength="64" />
 						</a-form-item>
@@ -192,6 +202,7 @@ import {
 import { customerApi } from '@/api/customer';
 import { customerBuildingApi, type CustomerBuildingInfo } from '@/api/customerBuilding';
 import { customerRoomApi, type CustomerRoomInfo } from '@/api/customerRoom';
+import { customerDepartmentApi } from '@/api/customerDepartment';
 
 type NodeType = 'customer' | 'building' | 'room';
 
@@ -231,6 +242,7 @@ const formData = reactive({
 	roomName: '',
 	floorNo: '',
 	roomPurpose: '',
+	deptId: undefined as number | undefined,
 });
 
 const buildingCount = computed(() => {
@@ -248,6 +260,9 @@ const buildingOptions = computed<{ label: string; value: number }[]>(() => {
 	return root.children.map((node) => ({ label: node.title, value: node.data.id as number }));
 });
 
+const departmentOptions = ref<{ label: string; value: number }[]>([]);
+const departmentLoading = ref(false);
+
 const formRules = computed(() => {
 	if (modalType.value === 'building') {
 		return {
@@ -358,6 +373,19 @@ async function loadTree() {
 	}
 }
 
+async function loadDepartments(customerId: number) {
+	departmentLoading.value = true;
+	try {
+		const res: any = await customerDepartmentApi.getDepartmentList({ customerId, page: 1, pageSize: 999 });
+		departmentOptions.value =
+			res.code === 200 ? res.data.list.map((d: any) => ({ label: d.deptName, value: d.id })) : [];
+	} catch {
+		departmentOptions.value = [];
+	} finally {
+		departmentLoading.value = false;
+	}
+}
+
 function handleAddBuilding() {
 	modalType.value = 'building';
 	isEdit.value = false;
@@ -391,6 +419,9 @@ function handleAddRoom(node: TreeNode) {
 	resetForm();
 	formData.customerId = selectedCustomerId.value;
 	formData.buildingId = node.data.id;
+	if (selectedCustomerId.value !== undefined) {
+		loadDepartments(selectedCustomerId.value);
+	}
 	modalVisible.value = true;
 }
 
@@ -407,6 +438,10 @@ function handleEditRoom(node: TreeNode) {
 	formData.roomName = r.roomName;
 	formData.floorNo = r.floorNo || '';
 	formData.roomPurpose = r.roomPurpose || '';
+	formData.deptId = r.deptId;
+	if (r.customerId !== undefined) {
+		loadDepartments(r.customerId);
+	}
 	modalVisible.value = true;
 }
 
@@ -421,6 +456,7 @@ function resetForm() {
 	formData.roomName = '';
 	formData.floorNo = '';
 	formData.roomPurpose = '';
+	formData.deptId = undefined;
 	if (formRef.value) {
 		formRef.value.clearValidate();
 	}
@@ -457,6 +493,7 @@ async function handleSubmit() {
 				roomName: formData.roomName,
 				floorNo: formData.floorNo,
 				roomPurpose: formData.roomPurpose,
+				deptId: formData.deptId,
 			};
 			if (isEdit.value && editId.value != null) {
 				res = await customerRoomApi.update(editId.value, payload);