diff --git a/admin-frontend-vue/src/pages/asin/ProductCategoryPage.vue b/admin-frontend-vue/src/pages/asin/ProductCategoryPage.vue
index fe0bf45b..4014bfb5 100644
--- a/admin-frontend-vue/src/pages/asin/ProductCategoryPage.vue
+++ b/admin-frontend-vue/src/pages/asin/ProductCategoryPage.vue
@@ -1,10 +1,19 @@
 <script setup lang="ts">
-/** 商品类目：对齐 admin panel-product-categories —— 树(关键字搜索态独立分页/加载更多)、导出、删除(有子禁用)、新增/编辑弹窗语义。 */
+/** 商品类目：对齐 admin panel-product-categories —— 树节点带 来源/排序/备注 + 行内编辑删除(有子禁用)、
+ *  按需懒加载子级(「加载更多 已加载 x/y」)、搜索态独立分页/加载更多、导出、新增/编辑弹窗语义。 */
 import { computed, onMounted, reactive, ref } from 'vue'
 import { ElMessage, ElMessageBox } from 'element-plus'
-import { fetchProductCategoryTree, searchProductCategories } from './product-category-api.ts'
+import { fetchProductCategoryChildren, searchProductCategories } from './product-category-api.ts'
 import { createProductCategory, deleteProductCategory, updateProductCategory } from './product-category-editor-api.ts'
-import { PRODUCT_CATEGORY_DEFAULT_PAGE_SIZE, type ProductCategoryNode } from './product-category-model.ts'
+import {
+  appendCategoryChildren,
+  isCategoryLoadMoreNode,
+  makeCategoryLoadMoreNode,
+  PRODUCT_CATEGORY_DEFAULT_PAGE_SIZE,
+  productCategoryNodeMeta,
+  productCategorySourceLabel,
+  type ProductCategoryNode,
+} from './product-category-model.ts'
 import { categoryDraftError, createProductCategoryDraft, toCategorySaveRequest, type ProductCategoryDraft } from './product-category-editor-model.ts'
 import { buildProductCategoryExportUrl } from './product-category-export.ts'
 
@@ -24,11 +33,21 @@ const editingId = ref<number | null>(null)
 const saving = ref(false)
 const draft = reactive<ProductCategoryDraft>(createProductCategoryDraft())
 
+/** 每父级(根=null)的子级分页状态：page/total/hasMore/loading，支撑「加载更多 已加载 x/y」。 */
+const childrenState = new Map<string, { page: number; total: number; hasMore: boolean; loading: boolean }>()
+const ROOT_KEY = '__root__'
+
+function stateKeyOf(parentId: number | null): string {
+  return parentId == null ? ROOT_KEY : String(parentId)
+}
+
 function flatten(nodes: ProductCategoryNode[]): ProductCategoryNode[] {
   const out: ProductCategoryNode[] = []
   for (const node of nodes || []) {
-    out.push(node)
-    out.push(...flatten(node.children))
+    if (!isCategoryLoadMoreNode(node)) {
+      out.push(node)
+      out.push(...flatten(node.children))
+    }
   }
   return out
 }
@@ -37,10 +56,16 @@ const allNodes = computed(() => flatten(tree.value))
 const searching = computed(() => (keyword.value || '').trim().length > 0)
 const dialogTitle = computed(() => (editingId.value == null ? '新增商品类目' : '编辑商品类目'))
 
+/** 拉取根级第一页（对齐 admin.js loadProductCategoryChildren(null) 懒加载根）。 */
 async function loadTree(): Promise<void> {
   loading.value = true
   try {
-    tree.value = (await fetchProductCategoryTree('')).tree
+    const result = await fetchProductCategoryChildren(null, 1, PRODUCT_CATEGORY_DEFAULT_PAGE_SIZE)
+    const state = { page: result.page, total: result.total, hasMore: result.hasMore, loading: false }
+    childrenState.set(ROOT_KEY, state)
+    tree.value = result.hasMore
+      ? [...result.items, makeCategoryLoadMoreNode(null, result.items.length, result.total)]
+      : result.items
   } catch (error) {
     ElMessage.error(error instanceof Error ? error.message : '类目加载失败')
   } finally {
@@ -48,6 +73,62 @@ async function loadTree(): Promise<void> {
   }
 }
 
+/** 节点展开时按需加载子级第一页（childCount>0 且未加载过才拉取）。 */
+async function onNodeExpand(node: ProductCategoryNode): Promise<void> {
+  if (isCategoryLoadMoreNode(node) || node.childCount <= 0 || node.children.length > 0) return
+  await loadChildrenPage(node, 1, false)
+}
+
+/** 加载某父级一页子级（append=false 重置；append=true 追加并重建「加载更多」节点）。 */
+async function loadChildrenPage(parent: ProductCategoryNode | null, page: number, append: boolean): Promise<void> {
+  const key = stateKeyOf(parent?.id ?? null)
+  const state = childrenState.get(key)
+  if (state?.loading) return
+  childrenState.set(key, { page: state?.page ?? 0, total: state?.total ?? 0, hasMore: state?.hasMore ?? false, loading: true })
+  try {
+    const result = await fetchProductCategoryChildren(parent?.id ?? null, page, PRODUCT_CATEGORY_DEFAULT_PAGE_SIZE)
+    const loaded = append ? (state?.page ?? 0) + result.items.length : result.items.length
+    const nextState = { page: result.page, total: result.total, hasMore: result.hasMore, loading: false }
+    childrenState.set(key, nextState)
+    if (parent) {
+      const current = parent.children || []
+      parent.children = append
+        ? appendCategoryChildren(current, result.items, parent.id, loaded, result.total, result.hasMore)
+        : (result.hasMore
+            ? [...result.items, makeCategoryLoadMoreNode(parent.id, result.items.length, result.total)]
+            : result.items)
+    } else {
+      const current = tree.value
+      tree.value = append
+        ? appendCategoryChildren(current, result.items, null, loaded, result.total, result.hasMore)
+        : (result.hasMore
+            ? [...result.items, makeCategoryLoadMoreNode(null, result.items.length, result.total)]
+            : result.items)
+    }
+  } catch (error) {
+    const fallback = childrenState.get(key) ?? { page: 0, total: 0, hasMore: false, loading: false }
+    fallback.loading = false
+    childrenState.set(key, fallback)
+    ElMessage.error(error instanceof Error ? error.message : '子类目加载失败')
+  }
+}
+
+/** 点击「加载更多」合成节点：翻下一页追加。 */
+async function loadMoreChildren(more: ProductCategoryNode): Promise<void> {
+  if (!isCategoryLoadMoreNode(more)) return
+  const parentId = more.parentId
+  const parent = parentId == null ? null : allNodes.value.find((node) => node.id === parentId) ?? null
+  if (parentId != null && !parent) return
+  const state = childrenState.get(stateKeyOf(parentId))
+  if (state?.loading) return
+  await loadChildrenPage(parent, (state?.page ?? 0) + 1, true)
+}
+
+/** 「加载更多」按钮的加载态：取其父级分页状态的 loading。 */
+function moreLoading(more: ProductCategoryNode): boolean {
+  return isCategoryLoadMoreNode(more) && (childrenState.get(stateKeyOf(more.parentId))?.loading ?? false)
+}
+
 async function runSearch(page: number): Promise<void> {
   searchLoading.value = true
   try {
@@ -99,12 +180,16 @@ function openEdit(node: ProductCategoryNode) {
 }
 
 function onNodeClick(node: ProductCategoryNode) {
+  if (isCategoryLoadMoreNode(node)) {
+    void loadMoreChildren(node)
+    return
+  }
   selected.value = node
 }
 
 function canDelete(node: ProductCategoryNode | null): boolean {
-  if (!node) return false
-  return !(node.childCount > 0 || (Array.isArray(node.children) && node.children.length > 0))
+  if (!node || isCategoryLoadMoreNode(node)) return false
+  return !(node.childCount > 0 || (Array.isArray(node.children) && node.children.some((child) => !isCategoryLoadMoreNode(child))))
 }
 
 async function removeCategory(node: ProductCategoryNode): Promise<void> {
@@ -176,14 +261,14 @@ onMounted(loadTree)
         <p>维护商品类目树与类目名称/说明；有子类目节点不可删除。</p>
       </div>
       <div class="actions">
-        <el-button type="primary" @click="openCreate(null)">新增根类目</el-button>
+        <el-button type="primary" @click="openCreate(null)">新增类目</el-button>
         <el-button @click="exportCategories">导出</el-button>
       </div>
     </div>
 
     <el-card shadow="never" style="margin-bottom: 14px">
       <div class="filter-row">
-        <el-input v-model="keyword" placeholder="搜索类目名称（保留父路径）" clearable style="width: 280px" @keyup.enter="apply" />
+        <el-input v-model="keyword" placeholder="搜索类目名称、编码或备注" clearable style="width: 280px" @keyup.enter="apply" />
         <el-button type="primary" @click="apply">搜索</el-button>
         <el-button @click="reset">清空</el-button>
       </div>
@@ -195,16 +280,42 @@ onMounted(loadTree)
         :data="tree"
         node-key="id"
         :props="{ label: 'name', children: 'children' }"
-        default-expand-all
+        :expand-on-click-node="false"
         highlight-current
         @node-click="onNodeClick"
-      />
+        @node-expand="onNodeExpand"
+      >
+        <template #default="{ data }">
+          <template v-if="isCategoryLoadMoreNode(data)">
+            <span class="node-more" @click.stop="loadMoreChildren(data)">
+              <el-button link size="small" :loading="moreLoading(data)">加载更多</el-button>
+              <span class="dim">已加载 {{ data.loadedCount }} / {{ data.totalCount }}</span>
+            </span>
+          </template>
+          <span v-else class="node-row">
+            <span class="node-main">
+              <span class="node-name">{{ data.name }}</span>
+              <el-tag size="small" effect="plain" :type="data.isBuiltin ? 'info' : 'success'">{{ productCategorySourceLabel(data) }}</el-tag>
+              <span class="node-meta">{{ productCategoryNodeMeta(data) }}</span>
+              <span v-if="data.description" class="node-desc" :title="data.description">{{ data.description }}</span>
+            </span>
+            <span class="node-ops" @click.stop>
+              <el-button link size="small" type="primary" @click="openEdit(data as ProductCategoryNode)">编辑</el-button>
+              <el-button
+                link
+                size="small"
+                type="danger"
+                :disabled="!canDelete(data as ProductCategoryNode)"
+                @click="removeCategory(data as ProductCategoryNode)"
+              >删除</el-button>
+            </span>
+          </span>
+        </template>
+      </el-tree>
       <div class="tree-actions">
         <span class="dim">{{ selected ? `已选：${selected.path || selected.name}` : '未选中节点' }}</span>
         <span class="btn-group">
           <el-button size="small" :disabled="!selected" @click="openCreate(selected)">新增子类目</el-button>
-          <el-button size="small" type="primary" :disabled="!selected" @click="openEdit(selected as ProductCategoryNode)">编辑</el-button>
-          <el-button size="small" type="danger" :disabled="!canDelete(selected)" @click="removeCategory(selected as ProductCategoryNode)">删除</el-button>
         </span>
       </div>
     </el-card>
@@ -222,6 +333,13 @@ onMounted(loadTree)
         <el-table-column label="排序" width="90">
           <template #default="{ row }">{{ (row as ProductCategoryNode).sortOrder ?? '—' }}</template>
         </el-table-column>
+        <el-table-column label="来源" width="100">
+          <template #default="{ row }">
+            <el-tag size="small" effect="plain" :type="(row as ProductCategoryNode).isBuiltin ? 'info' : 'success'">
+              {{ productCategorySourceLabel(row as ProductCategoryNode) }}
+            </el-tag>
+          </template>
+        </el-table-column>
         <el-table-column label="说明" min-width="180">
           <template #default="{ row }">{{ (row as ProductCategoryNode).description || '—' }}</template>
         </el-table-column>
diff --git a/admin-frontend-vue/src/pages/asin/product-category-api.ts b/admin-frontend-vue/src/pages/asin/product-category-api.ts
index 8d67ca81..0aa47356 100644
--- a/admin-frontend-vue/src/pages/asin/product-category-api.ts
+++ b/admin-frontend-vue/src/pages/asin/product-category-api.ts
@@ -4,6 +4,7 @@ import {
   parseProductCategoryList,
   parseProductCategorySearchPage,
   type ProductCategoryListResult,
+  type ProductCategoryNode,
   type ProductCategorySearchPage,
 } from './product-category-model'
 
@@ -30,3 +31,24 @@ export async function searchProductCategories(
   const { data } = await http.get<unknown>(`${PRODUCT_CATEGORY_ENDPOINT}/search`, { params })
   return parseProductCategorySearchPage(data)
 }
+
+/** 子级类目分页页（对齐 admin.js loadProductCategoryChildren 的 /children 端点语义）。 */
+export interface ProductCategoryChildrenPage {
+  items: ProductCategoryNode[]
+  total: number
+  page: number
+  hasMore: boolean
+}
+
+/** 懒加载某父级的子类目页（parentId 为空表示根级），解析 page/total/hasMore。 */
+export async function fetchProductCategoryChildren(
+  parentId: number | null,
+  page: number,
+  pageSize: number,
+): Promise<ProductCategoryChildrenPage> {
+  const params: Record<string, string | number> = { page, page_size: pageSize }
+  if (parentId != null) params.parent_id = parentId
+  const { data } = await http.get<unknown>(`${PRODUCT_CATEGORY_ENDPOINT}/children`, { params })
+  const parsed = parseProductCategorySearchPage(data)
+  return { items: parsed.items, total: parsed.total, page: parsed.page, hasMore: parsed.hasMore }
+}
diff --git a/admin-frontend-vue/src/pages/asin/product-category-model.ts b/admin-frontend-vue/src/pages/asin/product-category-model.ts
index 4e06c9e5..e0ef0c9b 100644
--- a/admin-frontend-vue/src/pages/asin/product-category-model.ts
+++ b/admin-frontend-vue/src/pages/asin/product-category-model.ts
@@ -107,3 +107,63 @@ export function parseProductCategorySearchPage(payload: unknown): ProductCategor
   const hasMore = typeof record?.hasMore === 'boolean' ? record.hasMore : page * pageSize < total
   return { items, total, page, pageSize, hasMore }
 }
+
+/** 来源展示标签（对齐 admin.js:6004 内置/自定义 tag）。 */
+export function productCategorySourceLabel(node: Pick<ProductCategoryNode, 'isBuiltin'> | null | undefined): string {
+  return node?.isBuiltin ? '内置' : '自定义'
+}
+
+/** 节点元信息文案：来源 + 排序（对齐参考 来源列/排序列）。 */
+export function productCategoryNodeMeta(node: Pick<ProductCategoryNode, 'isBuiltin' | 'sortOrder'>): string {
+  return `${productCategorySourceLabel(node)} · 排序 ${node.sortOrder ?? 0}`
+}
+
+/** 合成"加载更多"节点：挂在同级 children 末尾，点击翻下一页（对齐 admin.js 的 load-more 行）。 */
+export interface CategoryLoadMoreNode extends ProductCategoryNode {
+  isLoadMore: true
+  loadedCount: number
+  totalCount: number
+}
+
+export function isCategoryLoadMoreNode(node: ProductCategoryNode | null | undefined): node is CategoryLoadMoreNode {
+  return !!node && (node as Partial<CategoryLoadMoreNode>).isLoadMore === true
+}
+
+export function makeCategoryLoadMoreNode(
+  parentId: number | null,
+  loadedCount: number,
+  totalCount: number,
+): CategoryLoadMoreNode {
+  const syntheticId = parentId ? -parentId : -1
+  return {
+    id: syntheticId,
+    parentId,
+    name: '',
+    categoryKey: '',
+    sortOrder: null,
+    description: '',
+    isBuiltin: false,
+    childCount: 0,
+    level: null,
+    path: '',
+    children: [],
+    isLoadMore: true,
+    loadedCount,
+    totalCount,
+  }
+}
+
+/** 把新一页并入同级 children：去掉旧"加载更多"节点，追加新条目；仍有下一页时补新"加载更多"节点。 */
+export function appendCategoryChildren(
+  current: ProductCategoryNode[],
+  nextItems: ProductCategoryNode[],
+  parentId: number | null,
+  loadedCount: number,
+  totalCount: number,
+  hasMore: boolean,
+): ProductCategoryNode[] {
+  const base = current.filter((node) => !isCategoryLoadMoreNode(node))
+  const merged = [...base, ...nextItems]
+  if (hasMore) merged.push(makeCategoryLoadMoreNode(parentId, loadedCount, totalCount))
+  return merged
+}
diff --git a/admin-frontend-vue/tests/align-product-category.test.ts b/admin-frontend-vue/tests/align-product-category.test.ts
new file mode 100644
index 00000000..23b94db2
--- /dev/null
+++ b/admin-frontend-vue/tests/align-product-category.test.ts
@@ -0,0 +1,87 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+import {
+  appendCategoryChildren,
+  isCategoryLoadMoreNode,
+  makeCategoryLoadMoreNode,
+  productCategoryNodeMeta,
+  productCategorySourceLabel,
+  type ProductCategoryNode,
+} from '../src/pages/asin/product-category-model.ts'
+
+/** 对齐 admin.js:5998-6012/6077-6120：树节点带来源/排序/备注、按需懒加载 + 加载更多(已加载 x/y)。 */
+
+function node(id: number, overrides: Partial<ProductCategoryNode> = {}): ProductCategoryNode {
+  return {
+    id,
+    parentId: null,
+    name: `类目${id}`,
+    categoryKey: `k${id}`,
+    sortOrder: id,
+    description: '',
+    isBuiltin: false,
+    childCount: 0,
+    level: 0,
+    path: `类目${id}`,
+    children: [],
+    ...overrides,
+  }
+}
+
+test('align_category_source_label', () => {
+  assert.equal(productCategorySourceLabel({ isBuiltin: true } as ProductCategoryNode), '内置')
+  assert.equal(productCategorySourceLabel({ isBuiltin: false } as ProductCategoryNode), '自定义')
+  assert.equal(productCategorySourceLabel(null), '自定义')
+})
+
+test('align_category_node_meta_contains_source_and_sort', () => {
+  assert.equal(productCategoryNodeMeta({ isBuiltin: true, sortOrder: 3 } as ProductCategoryNode), '内置 · 排序 3')
+  assert.equal(productCategoryNodeMeta({ isBuiltin: false, sortOrder: null } as ProductCategoryNode), '自定义 · 排序 0')
+})
+
+test('align_category_load_more_node_factory', () => {
+  const more = makeCategoryLoadMoreNode(5, 20, 45)
+  assert.equal(isCategoryLoadMoreNode(more), true)
+  assert.equal(more.parentId, 5)
+  assert.equal(more.loadedCount, 20)
+  assert.equal(more.totalCount, 45)
+  assert.equal(isCategoryLoadMoreNode(node(1)), false)
+})
+
+test('align_category_append_children_keeps_more_until_done', () => {
+  const current = [node(1), makeCategoryLoadMoreNode(null, 20, 45)]
+  const next = appendCategoryChildren(current, [node(2), node(3)], null, 40, 45, true)
+  assert.deepEqual(next.filter((n) => !isCategoryLoadMoreNode(n)).map((n) => n.id), [1, 2, 3])
+  const tail = next[next.length - 1]
+  assert.equal(isCategoryLoadMoreNode(tail), true)
+  assert.equal((tail as ReturnType<typeof makeCategoryLoadMoreNode>).loadedCount, 40)
+})
+
+test('align_category_append_children_drops_more_when_complete', () => {
+  const current = [node(1), makeCategoryLoadMoreNode(9, 20, 22)]
+  const next = appendCategoryChildren(current, [node(2), node(3)], 9, 22, 22, false)
+  assert.deepEqual(next.map((n) => n.id), [1, 2, 3])
+  assert.equal(next.some((n) => isCategoryLoadMoreNode(n)), false)
+})
+
+test('align_category_children_api_wiring', () => {
+  const api = readSource('src/pages/asin/product-category-api.ts')
+  assert.match(api, /children/, '懒加载走 children 端点')
+  assert.match(api, /parent_id|parentId/, '带父级参数')
+  assert.match(api, /page_size|pageSize/, '分页参数')
+})
+
+test('align_category_page_tree_and_search_wiring', () => {
+  const page = readSource('src/pages/asin/ProductCategoryPage.vue')
+  assert.doesNotMatch(page, /default-expand-all/, '树不再全量展开，改按需懒加载')
+  assert.match(page, /加载更多/, '节点带加载更多')
+  assert.match(page, /已加载/, '显示已加载 x/y')
+  assert.match(page, /productCategorySourceLabel/, '节点展示来源')
+  assert.match(page, /排序/, '节点展示排序')
+  assert.doesNotMatch(page, /新增根类目/, '按钮名对齐参考“新增类目”')
+  assert.match(page, /新增类目/, '顶部新增类目按钮')
+  assert.match(page, /搜索类目名称、编码或备注/, '搜索占位对齐参考')
+  assert.match(page, /来源/, '搜索表格补来源列')
+  assert.match(page, /childCount/, '删除按钮按有子禁用')
+})
diff --git a/admin-frontend-vue/tests/task-256.test.ts b/admin-frontend-vue/tests/task-256.test.ts
index f87010c4..f1165b25 100644
--- a/admin-frontend-vue/tests/task-256.test.ts
+++ b/admin-frontend-vue/tests/task-256.test.ts
@@ -28,7 +28,8 @@ test('test_task_256_category_normal_repeated_operation_is_idempotent', () => {
 
 test('test_task_256_category_boundary_empty_input', () => {
   const page = readSource('src/pages/asin/ProductCategoryPage.vue')
-  assert.match(page, /新增根类目/, '需保留新增根类目')
+  // 对齐 admin.html：顶部按钮名「新增类目」；选中节点后仍可新增子类目。
+  assert.match(page, /新增类目/, '顶部新增类目入口')
   assert.match(page, /新增子类目/, '需保留新增子类目')
 })