diff --git a/src/subPages/work/dept/index.vue b/src/subPages/work/dept/index.vue
index 430345e..01a1a66 100644
--- a/src/subPages/work/dept/index.vue
+++ b/src/subPages/work/dept/index.vue
@@ -102,7 +102,7 @@
 <script lang="ts" setup>
 import { onLoad } from "@dcloudio/uni-app";
 import { toFormSchema } from "@/utils/form-schema";
-import { findOptionChain } from "@/utils/tree";
+import { findOptionChain, toTree } from "@/utils/tree";
 import { useToast } from "@wot-ui/ui";
 import type { CascaderOption } from "@wot-ui/ui/components/wd-cascader/types";
 import ActionSheet, { type ActionSheetCommand } from "@/subPages/work/components/ActionSheet.vue";
@@ -148,20 +148,20 @@ interface DeptTreeOption extends TreeOption {
 
 // 转换为树组件数据格式
 const treeData = computed<DeptTreeOption[]>(() =>
-  deptList.value.map((dept) => transformDeptToTree(dept))
+  toTree(
+    deptList.value,
+    (dept) => dept.children,
+    (dept, children) => ({
+      value: String(dept.id),
+      label: dept.name ?? "",
+      id: dept.id,
+      name: dept.name,
+      status: dept.status,
+      children,
+    })
+  )
 );
 
-function transformDeptToTree(dept: DeptItem): DeptTreeOption {
-  return {
-    value: String(dept.id),
-    label: dept.name ?? "",
-    id: dept.id,
-    name: dept.name,
-    status: dept.status,
-    children: dept.children?.map((child) => transformDeptToTree(child)) || [],
-  };
-}
-
 // 上级部门选择器
 const showParentPicker = ref(false);
 const parentSelected = ref<string | number>("");
diff --git a/src/subPages/work/menu/index.vue b/src/subPages/work/menu/index.vue
index cf7f5d5..c6592f5 100644
--- a/src/subPages/work/menu/index.vue
+++ b/src/subPages/work/menu/index.vue
@@ -157,7 +157,7 @@
 <script lang="ts" setup>
 import { onLoad } from "@dcloudio/uni-app";
 import { toFormSchema } from "@/utils/form-schema";
-import { findOptionChain } from "@/utils/tree";
+import { findOptionChain, toTree } from "@/utils/tree";
 import { useToast } from "@wot-ui/ui";
 import ActionSheet, { type ActionSheetCommand } from "@/subPages/work/components/ActionSheet.vue";
 import { useConfirmAction } from "@/composables/useConfirmAction";
@@ -230,24 +230,23 @@ const MENU_TYPE_TEXT: Record<MenuType, string> = {
 
 // 菜单列表转树节点：value/label 供树组件使用，业务字段随节点透传给操作菜单
 const treeData = computed<MenuTreeOption[]>(() =>
-  menuList.value.map((menu: MenuItem) => transformMenuToTree(menu))
+  toTree(
+    menuList.value,
+    (menu) => menu.children,
+    (menu, children) => ({
+      value: menu.id ?? "",
+      label: menu.name ?? "",
+      id: menu.id,
+      name: menu.name,
+      type: menu.type,
+      icon: menu.icon,
+      visible: menu.visible,
+      perm: menu.perm,
+      children,
+    })
+  )
 );
 
-// 递归转换：子节点沿用同一套字段，空 id 用空串占位以满足树组件契约
-function transformMenuToTree(menu: MenuItem): MenuTreeOption {
-  return {
-    value: menu.id ?? "",
-    label: menu.name ?? "",
-    id: menu.id,
-    name: menu.name,
-    type: menu.type,
-    icon: menu.icon,
-    visible: menu.visible,
-    perm: menu.perm,
-    children: menu.children?.map((child: MenuItem) => transformMenuToTree(child)) || [],
-  };
-}
-
 // 菜单类型对应的标签颜色，类型缺失时按主色展示
 function getMenuTypeTag(type?: MenuType) {
   return (type && MENU_TYPE_TAG[type]) || "primary";
diff --git a/src/subPages/work/role/assign-perm/index.vue b/src/subPages/work/role/assign-perm/index.vue
index 250b557..bf7ee96 100644
--- a/src/subPages/work/role/assign-perm/index.vue
+++ b/src/subPages/work/role/assign-perm/index.vue
@@ -78,6 +78,7 @@
 <script lang="ts" setup>
 import { onLoad } from "@dcloudio/uni-app";
 import MenuAPI, { type MenuItem, type MenuType } from "@/api/menu";
+import { toTree } from "@/utils/tree";
 import RoleAPI from "@/api/role";
 import { getErrorMessage } from "@/utils/error";
 import TreeView from "@/subPages/work/components/TreeView.vue";
@@ -104,27 +105,21 @@ interface PermissionTreeOption extends TreeOption {
   children?: PermissionTreeOption[];
 }
 
-// 转换菜单为树结构
-const menuTree = computed<PermissionTreeOption[]>(() => {
-  if (!menuList.value.length) return [];
-  return transformMenuToTree(menuList.value);
-});
-
-// 转换菜单为树组件格式
-function transformMenuToTree(menus: MenuItem[]): PermissionTreeOption[] {
-  return menus.map((menu) => {
-    const id = String(menu.id);
-    const name = menu.name ?? "";
-    return {
-      value: id,
-      label: name,
-      id,
-      name,
+// 转换菜单为树组件格式，叶子节点不携带 children 字段
+const menuTree = computed<PermissionTreeOption[]>(() =>
+  toTree(
+    menuList.value,
+    (menu) => menu.children,
+    (menu, children) => ({
+      value: String(menu.id),
+      label: menu.name ?? "",
+      id: String(menu.id),
+      name: menu.name ?? "",
       type: menu.type,
-      children: menu.children ? transformMenuToTree(menu.children) : undefined,
-    };
-  });
-}
+      children: menu.children ? children : undefined,
+    })
+  )
+);
 
 // 处理选中变化
 function handleCheck(keys: string[]) {
diff --git a/src/utils/tree.ts b/src/utils/tree.ts
index 8281f04..d30bfb7 100644
--- a/src/utils/tree.ts
+++ b/src/utils/tree.ts
@@ -24,3 +24,21 @@ export function findOptionChain(
   }
   return null;
 }
+
+/**
+ * 递归把带 children 的列表转为树节点
+ *
+ * 源列表的层级由 children 字段表达，节点字段与叶子形态由调用方决定
+ *
+ * @param items 源列表
+ * @param getChildren 取节点的子列表，无子级时返回 undefined
+ * @param node 单节点映射，children 为已构建的子节点数组，叶子节点为空数组
+ * @returns 树节点列表
+ */
+export function toTree<TSource, TNode>(
+  items: TSource[],
+  getChildren: (item: TSource) => TSource[] | undefined,
+  node: (item: TSource, children: TNode[]) => TNode
+): TNode[] {
+  return items.map((item) => node(item, toTree(getChildren(item) ?? [], getChildren, node)));
+}