diff --git a/klp-ui/src/assets/styles/sidebar.scss b/klp-ui/src/assets/styles/sidebar.scss
index 51e94e39..7572de21 100644
--- a/klp-ui/src/assets/styles/sidebar.scss
+++ b/klp-ui/src/assets/styles/sidebar.scss
@@ -303,4 +303,17 @@
 
 #app .sidebar-container .nest-menu .el-submenu .el-submenu__title {
   margin: 0 4px;
+}
+
+// 二级菜单叶子页面小圆点
+.el-menu-item.is-page-item::before {
+  content: '';
+  display: inline-block;
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  background: var(--current-color, #409EFF);
+  margin-right: 8px;
+  flex-shrink: 0;
+  vertical-align: middle;
 }
\ No newline at end of file
diff --git a/klp-ui/src/layout/components/Navbar.vue b/klp-ui/src/layout/components/Navbar.vue
index 4c6747cb..6865f279 100644
--- a/klp-ui/src/layout/components/Navbar.vue
+++ b/klp-ui/src/layout/components/Navbar.vue
@@ -2,7 +2,8 @@
   <div class="navbar">
     <hamburger id="hamburger-container" :is-active="sidebar.opened" class="hamburger-container" @toggleClick="toggleSideBar" />
 
-    <breadcrumb id="breadcrumb-container" class="breadcrumb-container" v-if="!topNav"/>
+    <breadcrumb id="breadcrumb-container" class="breadcrumb-container" v-show="topNav || !showSubNav"/>
+    <sub-nav id="subnav-container" class="subnav-container" v-if="!topNav" @has-items="showSubNav = $event"/>
     <top-nav id="topmenu-container" class="topmenu-container" v-if="topNav"/>
 
     <div class="right-menu">
@@ -52,6 +53,7 @@
 import { mapGetters } from 'vuex'
 import Breadcrumb from '@/components/Breadcrumb'
 import TopNav from '@/components/TopNav'
+import SubNav from './SubNav'
 import Hamburger from '@/components/Hamburger'
 import Screenfull from '@/components/Screenfull'
 // import SizeSelect from '@/components/SizeSelect'
@@ -64,6 +66,7 @@ export default {
   components: {
     Breadcrumb,
     TopNav,
+    SubNav,
     Hamburger,
     Screenfull,
     // SizeSelect,
@@ -74,7 +77,8 @@ export default {
   data() {
     return {
       hasWarning: false,
-      warningTimer: null
+      warningTimer: null,
+      showSubNav: true
     }
   },
   computed: {
@@ -153,6 +157,8 @@ export default {
   height: 50px;
   overflow: hidden;
   position: relative;
+  display: flex;
+  align-items: center;
   // 金属质感渐变背景
   // background: #454c51;
   // border-bottom: 1px solid #8d939b;
@@ -162,7 +168,7 @@ export default {
   .hamburger-container {
     line-height: 46px;
     height: 100%;
-    float: left;
+    flex-shrink: 0;
     cursor: pointer;
     transition: all .3s ease;
     -webkit-tap-highlight-color: transparent;
@@ -177,10 +183,16 @@ export default {
   }
 
   .breadcrumb-container {
-    float: left;
+    flex-shrink: 0;
     padding-left: 15px;
   }
 
+  .subnav-container {
+    flex: 1;
+    min-width: 0;
+    padding-left: 8px;
+  }
+
   .topmenu-container {
     position: absolute;
     left: 50px;
@@ -192,7 +204,8 @@ export default {
   }
 
   .right-menu {
-    float: right;
+    flex-shrink: 0;
+    margin-left: auto;
     height: 100%;
     line-height: 50px;
 
diff --git a/klp-ui/src/layout/components/Sidebar/SidebarItem.vue b/klp-ui/src/layout/components/Sidebar/SidebarItem.vue
index 17ea89c2..44e7eca1 100644
--- a/klp-ui/src/layout/components/Sidebar/SidebarItem.vue
+++ b/klp-ui/src/layout/components/Sidebar/SidebarItem.vue
@@ -1,6 +1,23 @@
 <template>
   <div v-if="!item.hidden">
-    <template v-if="hasOneShowingChild(item.children,item) && (!onlyOneChild.children||onlyOneChild.noShowingChildren)&&!item.alwaysShow">
+    <template v-if="depth >= 1">
+      <template v-if="hasVisibleChild">
+        <app-link :to="subMenuRoute">
+          <el-menu-item :index="basePath" :class="{'submenu-title-noDropdown':!isNest}">
+            <item :icon="item.meta && item.meta.icon" :title="item.meta && item.meta.title" />
+          </el-menu-item>
+        </app-link>
+      </template>
+      <template v-else>
+        <app-link :to="selfRoute">
+          <el-menu-item :index="basePath" :class="{'submenu-title-noDropdown':!isNest, 'is-page-item': true}">
+            <item :icon="item.meta && item.meta.icon" :title="item.meta && item.meta.title" />
+          </el-menu-item>
+        </app-link>
+      </template>
+    </template>
+
+    <template v-else-if="hasOneShowingChild(item.children,item) && (!onlyOneChild.children||onlyOneChild.noShowingChildren)&&!item.alwaysShow">
       <app-link v-if="onlyOneChild.meta" :to="resolvePath(onlyOneChild.path, onlyOneChild.query)">
         <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">
           <item :icon="onlyOneChild.meta.icon||(item.meta&&item.meta.icon)" :title="onlyOneChild.meta.title" />
@@ -18,6 +35,7 @@
         :is-nest="true"
         :item="child"
         :base-path="resolvePath(child.path)"
+        :depth="depth + 1"
         class="nest-menu"
       />
     </el-submenu>
@@ -48,12 +66,38 @@ export default {
     basePath: {
       type: String,
       default: ''
+    },
+    depth: {
+      type: Number,
+      default: 0
     }
   },
   data() {
     this.onlyOneChild = null
     return {}
   },
+  computed: {
+    hasVisibleChild() {
+      if (!this.item.children || !this.item.children.length) return false
+      return this.item.children.some(c => !c.hidden)
+    },
+    selfRoute() {
+      if (this.item.query) {
+        return { path: this.basePath, query: JSON.parse(this.item.query) }
+      }
+      return this.basePath
+    },
+    subMenuRoute() {
+      const title = (this.item.meta && this.item.meta.title) || this.item.name || ''
+      return {
+        path: '/redirect/subMenu',
+        query: {
+          parent: this.basePath,
+          title: title
+        }
+      }
+    }
+  },
   methods: {
     hasOneShowingChild(children = [], parent) {
       if (!children) {
diff --git a/klp-ui/src/layout/components/Sidebar/index.vue b/klp-ui/src/layout/components/Sidebar/index.vue
index c990e28d..39c3db0b 100644
--- a/klp-ui/src/layout/components/Sidebar/index.vue
+++ b/klp-ui/src/layout/components/Sidebar/index.vue
@@ -24,6 +24,7 @@
 </template>
 
 <script>
+import path from 'path'
 import { mapGetters, mapState } from "vuex";
 import Logo from "./Logo";
 import SidebarItem from "./SidebarItem";
@@ -36,12 +37,15 @@ export default {
         ...mapGetters(["sidebarRouters", "sidebar"]),
         activeMenu() {
             const route = this.$route;
-            const { meta, path } = route;
-            // if set path, the sidebar will highlight the path you set
+            const { meta, path: routePath } = route;
             if (meta.activeMenu) {
                 return meta.activeMenu;
             }
-            return path;
+            const level2 = this.findLevel2Parent(routePath);
+            if (level2) {
+                return level2;
+            }
+            return routePath;
         },
         showLogo() {
             return this.$store.state.settings.sidebarLogo;
@@ -53,5 +57,28 @@ export default {
             return !this.sidebar.opened;
         }
     },
+    methods: {
+        findLevel2Parent(currentPath) {
+            return this.walkTree(this.sidebarRouters, currentPath, 0, '');
+        },
+        walkTree(routes, currentPath, depth, basePath) {
+            for (const route of routes) {
+                if (route.hidden) continue;
+                const fullPath = basePath ? path.resolve(basePath, route.path) : route.path;
+                if (currentPath !== fullPath && !currentPath.startsWith(fullPath + '/')) continue;
+                if (depth >= 1) {
+                    return fullPath;
+                }
+                if (route.children && route.children.length) {
+                    const result = this.walkTree(route.children, currentPath, depth + 1, fullPath);
+                    if (result) return result;
+                }
+                if (currentPath === fullPath) {
+                    return depth >= 1 ? fullPath : null;
+                }
+            }
+            return null;
+        }
+    },
 };
 </script>
diff --git a/klp-ui/src/layout/components/SubNav.vue b/klp-ui/src/layout/components/SubNav.vue
new file mode 100644
index 00000000..cc90bc73
--- /dev/null
+++ b/klp-ui/src/layout/components/SubNav.vue
@@ -0,0 +1,306 @@
+<template>
+  <div v-if="subNavItems.length > 0" class="sub-nav">
+    <span class="sub-nav__arrow" :class="{ 'is-disabled': scrollLeft <= 0 }" @click="scrollTo('left')">
+      <i class="el-icon-arrow-left" />
+    </span>
+    <div ref="subNavWrap" class="sub-nav__wrap" @mousewheel="handleWheel">
+      <div ref="subNavInner" class="sub-nav__inner">
+        <template v-for="item in subNavItems">
+          <el-dropdown
+            v-if="item._hasChildren"
+            :key="item._ownPath"
+            trigger="click"
+            class="sub-nav__dropdown"
+            @command="handleCommand"
+          >
+            <span class="sub-nav__item sub-nav__item--dropdown" :class="{ 'is-active': isActive(item) }">
+              {{ item._title }}
+              <i class="el-icon-arrow-down el-icon--right" />
+            </span>
+            <el-dropdown-menu slot="dropdown">
+              <el-dropdown-item
+                v-for="child in item._children"
+                :key="child._ownPath"
+                :command="child._fullPath"
+                :class="{ 'is-active': isChildActive(child) }"
+              >
+                {{ child._title }}
+              </el-dropdown-item>
+            </el-dropdown-menu>
+          </el-dropdown>
+          <router-link
+            v-else
+            :key="item._ownPath"
+            :to="item._fullPath"
+            class="sub-nav__item"
+            :class="{ 'is-active': isActive(item) }"
+          >
+            {{ item._title }}
+          </router-link>
+        </template>
+      </div>
+    </div>
+    <span class="sub-nav__arrow" :class="{ 'is-disabled': !canScrollRight }" @click="scrollTo('right')">
+      <i class="el-icon-arrow-right" />
+    </span>
+  </div>
+</template>
+
+<script>
+import path from 'path'
+
+export default {
+  name: 'SubNav',
+  data() {
+    return {
+      scrollLeft: 0,
+      canScrollRight: false,
+      resizeObserver: null
+    }
+  },
+  computed: {
+    subNavItems() {
+      const sidebarRouters = this.$store.state.permission.sidebarRouters
+      const items = this.getThirdLevelMenus(sidebarRouters)
+      return items
+    },
+    hasItems() {
+      return this.subNavItems.length > 0
+    }
+  },
+  watch: {
+    $route() {
+      this.$nextTick(() => {
+        this.checkArrows()
+        this.scrollToActive()
+      })
+    },
+    hasItems(val) {
+      this.$emit('has-items', val)
+    }
+  },
+  mounted() {
+    this.$nextTick(() => {
+      this.checkArrows()
+      this.scrollToActive()
+    })
+    if (window.ResizeObserver) {
+      this.resizeObserver = new ResizeObserver(() => {
+        this.checkArrows()
+      })
+      if (this.$refs.subNavWrap) {
+        this.resizeObserver.observe(this.$refs.subNavWrap)
+      }
+    }
+  },
+  beforeDestroy() {
+    if (this.resizeObserver) {
+      this.resizeObserver.disconnect()
+    }
+  },
+  methods: {
+    handleCommand(command) {
+      this.$router.push(command)
+    },
+    isActive(item) {
+      return this.$route.path === item._ownPath || this.$route.path.startsWith(item._ownPath + '/')
+    },
+    isChildActive(child) {
+      return this.$route.path === child._ownPath || this.$route.path.startsWith(child._ownPath + '/')
+    },
+    getThirdLevelMenus(routes) {
+      let currentPath = this.$route.path
+      if (currentPath === '/redirect/subMenu' && this.$route.query.parent) {
+        currentPath = this.$route.query.parent
+      }
+      return this.findActiveLevel2(routes, currentPath, 0, '') || []
+    },
+    findActiveLevel2(routes, currentPath, depth, basePath) {
+      for (const route of routes) {
+        if (route.hidden) continue
+        if (!route.children || route.children.length === 0) continue
+
+        const fullPath = basePath ? path.resolve(basePath, route.path) : route.path
+        if (currentPath !== fullPath && !currentPath.startsWith(fullPath + '/')) continue
+
+        if (currentPath === fullPath && depth >= 1) {
+          if (depth === 1) {
+            return this.buildItems(route.children, fullPath)
+          }
+          return null
+        }
+
+        const nested = this.findActiveLevel2(route.children, currentPath, depth + 1, fullPath)
+        if (nested) return nested
+
+        if (depth === 1) {
+          return this.buildItems(route.children, fullPath)
+        }
+      }
+      return null
+    },
+    buildItems(children, parentPath) {
+      return children.filter(c => !c.hidden).map(c => this.buildItem(c, parentPath))
+    },
+    buildItem(c, parentPath) {
+      const ownPath = c.path.startsWith('/') ? c.path : path.resolve(parentPath, c.path)
+      const title = (c.meta && c.meta.title) || c.name || c.path
+      const hasChildren = c.children && c.children.length > 0 && c.children.some(gc => !gc.hidden)
+      const item = {
+        ...c,
+        _ownPath: ownPath,
+        _fullPath: ownPath,
+        _title: title,
+        _hasChildren: hasChildren
+      }
+      if (hasChildren) {
+        item._children = this.buildItems(c.children, ownPath)
+      }
+      return item
+    },
+    handleWheel(e) {
+      if (!this.$refs.subNavWrap) return
+      const delta = e.deltaY || e.wheelDelta
+      this.$refs.subNavWrap.scrollLeft += delta
+      this.scrollLeft = this.$refs.subNavWrap.scrollLeft
+      this.checkArrows()
+    },
+    scrollTo(direction) {
+      if (!this.$refs.subNavWrap) return
+      const wrap = this.$refs.subNavWrap
+      const scrollAmount = 200
+      if (direction === 'left') {
+        wrap.scrollLeft = Math.max(0, wrap.scrollLeft - scrollAmount)
+      } else {
+        wrap.scrollLeft = Math.min(wrap.scrollWidth - wrap.clientWidth, wrap.scrollLeft + scrollAmount)
+      }
+      this.scrollLeft = wrap.scrollLeft
+      this.checkArrows()
+    },
+    checkArrows() {
+      if (!this.$refs.subNavWrap) return
+      const wrap = this.$refs.subNavWrap
+      this.scrollLeft = wrap.scrollLeft
+      this.canScrollRight = wrap.scrollWidth > wrap.clientWidth + wrap.scrollLeft + 1
+    },
+    scrollToActive() {
+      if (!this.$refs.subNavWrap) return
+      const activeEl = this.$refs.subNavWrap.querySelector('.sub-nav__item.is-active')
+      if (activeEl) {
+        const wrap = this.$refs.subNavWrap
+        const activeLeft = activeEl.offsetLeft
+        const activeRight = activeLeft + activeEl.offsetWidth
+        if (activeLeft < wrap.scrollLeft) {
+          wrap.scrollLeft = activeLeft
+        } else if (activeRight > wrap.scrollLeft + wrap.clientWidth) {
+          wrap.scrollLeft = activeRight - wrap.clientWidth
+        }
+        this.scrollLeft = wrap.scrollLeft
+        this.checkArrows()
+      }
+    }
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.sub-nav {
+  display: flex;
+  align-items: center;
+  height: 50px;
+  flex: 1;
+  min-width: 0;
+  padding: 0 4px;
+
+  &__arrow {
+    flex-shrink: 0;
+    width: 24px;
+    height: 28px;
+    line-height: 28px;
+    text-align: center;
+    cursor: pointer;
+    border-radius: 4px;
+    color: #606266;
+    font-size: 12px;
+    transition: all 0.2s;
+
+    &:hover:not(.is-disabled) {
+      background: rgba(0, 0, 0, 0.06);
+      color: #111;
+    }
+
+    &.is-disabled {
+      color: #c0c4cc;
+      cursor: not-allowed;
+    }
+  }
+
+  &__wrap {
+    flex: 1;
+    overflow-x: auto;
+    overflow-y: hidden;
+    min-width: 0;
+    scrollbar-width: none;
+    -ms-overflow-style: none;
+
+    &::-webkit-scrollbar {
+      display: none;
+    }
+  }
+
+  &__inner {
+    display: flex;
+    align-items: center;
+    white-space: nowrap;
+  }
+
+  &__dropdown {
+    flex-shrink: 0;
+  }
+
+  &__item {
+    flex-shrink: 0;
+    padding: 6px 14px;
+    margin: 0 2px;
+    font-size: 13px;
+    color: #606266;
+    border-radius: 4px;
+    text-decoration: none;
+    cursor: pointer;
+    transition: all 0.2s;
+    white-space: nowrap;
+
+    &:hover {
+      background: rgba(0, 0, 0, 0.05);
+      color: #111;
+    }
+
+    &.is-active {
+      background: var(--current-color, #409EFF);
+      color: #fff;
+    }
+
+    &.is-active:hover {
+      background: var(--current-color, #409EFF);
+      color: #fff;
+      opacity: 0.9;
+    }
+
+    &--dropdown {
+      display: inline-flex;
+      align-items: center;
+      gap: 4px;
+
+      .el-icon--right {
+        margin-left: 2px;
+        font-size: 12px;
+      }
+    }
+  }
+}
+
+::v-deep .sub-nav__dropdown .el-dropdown-menu__item.is-active {
+  color: var(--current-color, #409EFF);
+  font-weight: 600;
+}
+</style>
diff --git a/klp-ui/src/router/index.js b/klp-ui/src/router/index.js
index 4b6f9614..2208f08a 100644
--- a/klp-ui/src/router/index.js
+++ b/klp-ui/src/router/index.js
@@ -35,6 +35,12 @@ export const constantRoutes = [
     component: Layout,
     hidden: true,
     children: [
+      {
+        path: 'subMenu',
+        component: () => import('@/views/redirectMenu'),
+        name: 'RedirectMenu',
+        meta: { title: '子菜单' }
+      },
       {
         path: '/redirect/:path(.*)',
         component: () => import('@/views/redirect')
diff --git a/klp-ui/src/store/getters.js b/klp-ui/src/store/getters.js
index 6c9757bc..1fbd69ec 100644
--- a/klp-ui/src/store/getters.js
+++ b/klp-ui/src/store/getters.js
@@ -23,5 +23,6 @@ const getters = {
   bomMap: state => state.category.bomMap,
   financialAccounts: state => state.finance.financialAccounts,
   processList: state => state.craft.processList,
+  productionLines: state => state.productionLine.productionLines,
 }
 export default getters
diff --git a/klp-ui/src/store/index.js b/klp-ui/src/store/index.js
index e8554aad..a759cce3 100644
--- a/klp-ui/src/store/index.js
+++ b/klp-ui/src/store/index.js
@@ -9,6 +9,7 @@ import settings from './modules/settings'
 import category from './modules/category'
 import finance from './modules/finance'
 import craft from './modules/craft'
+import productionLine from './modules/productionLine'
 import getters from './getters'
 
 Vue.use(Vuex)
@@ -23,7 +24,8 @@ const store = new Vuex.Store({
     settings,
     category,
     finance,
-    craft
+    craft,
+    productionLine
   },
   getters
 })
diff --git a/klp-ui/src/store/modules/productionLine.js b/klp-ui/src/store/modules/productionLine.js
new file mode 100644
index 00000000..c6b5298a
--- /dev/null
+++ b/klp-ui/src/store/modules/productionLine.js
@@ -0,0 +1,27 @@
+import { listProductionLine } from "@/api/wms/productionLine";
+
+const state = {
+  productionLines: [],
+}
+
+const mutations = {
+  SET_PRODUCTION_LINES(state, list) {
+    state.productionLines = list;
+  },
+}
+
+const actions = {
+  getProductionLines({ commit, state }) {
+    if (state.productionLines.length > 0) return Promise.resolve()
+    return listProductionLine({ pageNum: 1, pageSize: 100 }).then(response => {
+      commit('SET_PRODUCTION_LINES', response.rows || []);
+    });
+  }
+}
+
+export default {
+  namespaced: true,
+  state,
+  mutations,
+  actions
+}
diff --git a/klp-ui/src/views/mes/roll/grind/index.vue b/klp-ui/src/views/mes/roll/grind/index.vue
index d5e00a1c..873a47ab 100644
--- a/klp-ui/src/views/mes/roll/grind/index.vue
+++ b/klp-ui/src/views/mes/roll/grind/index.vue
@@ -494,9 +494,9 @@
 <script>
 import { listRollInfo, getRollInfo, addRollInfo, updateRollInfo, delRollInfo } from '@/api/mes/roll/rollInfo'
 import { listRollGrind, addRollGrind, updateRollGrind, delRollGrind, getMonthlyStats } from '@/api/mes/roll/rollGrind'
-import { listProductionLine } from '@/api/wms/productionLine'
 import { listData, addData, updateData, delData } from '@/api/system/dict/data'
 import rollLineMixin from '../rollLineMixin'
+import { mapGetters } from 'vuex'
 
 export default {
   name: 'GrindRoom',
@@ -504,7 +504,6 @@ export default {
   dicts: ['mes_roll_operator'],
   data() {
     return {
-      productionLines: [],
       filterLineId: null,
       lineTabOrder: [],
 
@@ -549,6 +548,8 @@ export default {
   },
 
   computed: {
+    ...mapGetters(['productionLines']),
+
     currentUserName() {
       return this.$store.state.user.name || this.$store.getters.name || ''
     },
@@ -606,9 +607,7 @@ export default {
       this.filterLineId = this.lineId
       const uid = this.$store.state.user?.userId || 0
       try { this.lineTabOrder = JSON.parse(localStorage.getItem(`grind_line_order_${uid}`) || '[]') } catch { /* ignore */ }
-      listProductionLine({ pageNum: 1, pageSize: 100 }).then(res => {
-        this.productionLines = res.rows || []
-      })
+      this.$store.dispatch('productionLine/getProductionLines')
       this.loadRolls()
     },
 
diff --git a/klp-ui/src/views/redirectMenu.vue b/klp-ui/src/views/redirectMenu.vue
new file mode 100644
index 00000000..b5dbd8d4
--- /dev/null
+++ b/klp-ui/src/views/redirectMenu.vue
@@ -0,0 +1,252 @@
+<template>
+  <div class="submenu-page">
+    <div class="submenu-page__header">
+      <span class="submenu-page__parent-title">{{ parentTitle }}</span>
+    </div>
+    <div v-if="tree.length" class="submenu-page__list">
+      <div v-for="group in tree" :key="group._ownPath" class="submenu-group">
+        <div class="submenu-group__title" @click="goTo(group)">
+          <span class="submenu-group__icon">
+            <svg-icon v-if="group.meta && group.meta.icon" :icon-class="group.meta.icon" />
+            <i v-else class="el-icon-folder-opened" />
+          </span>
+          <span class="submenu-group__text">{{ group._title }}</span>
+          <span v-if="group._hasChildren" class="submenu-group__count">{{ group._children.length }}项</span>
+          <i v-if="group._hasChildren" class="el-icon-arrow-right submenu-group__arrow" />
+        </div>
+        <div v-if="group._hasChildren" class="submenu-group__items">
+          <div
+            v-for="child in group._children"
+            :key="child._ownPath"
+            class="submenu-item"
+            :class="{ 'submenu-item--leaf': !child._hasChildren }"
+            @click="goTo(child)"
+          >
+            <i v-if="child._hasChildren" class="el-icon-folder submenu-item__folder" />
+            <i v-else class="el-icon-document submenu-item__doc" />
+            <span class="submenu-item__text">{{ child._title }}</span>
+            <i v-if="child._hasChildren" class="el-icon-arrow-right submenu-item__arrow" />
+          </div>
+        </div>
+      </div>
+    </div>
+    <div v-else class="submenu-page__empty">暂无可访问的菜单</div>
+  </div>
+</template>
+
+<script>
+import path from 'path'
+
+export default {
+  name: 'RedirectMenu',
+  computed: {
+    parentPath() {
+      return this.$route.query.parent || ''
+    },
+    parentTitle() {
+      return this.$route.query.title || this.parentPath
+    },
+    tree() {
+      const sidebarRouters = this.$store.state.permission.sidebarRouters
+      const children = this.findChildren(sidebarRouters, this.parentPath, '')
+      if (!children) return []
+      return this.buildTree(children, this.parentPath)
+    }
+  },
+  methods: {
+    findChildren(routes, targetPath, basePath) {
+      for (const route of routes) {
+        if (route.hidden) continue
+        const fullPath = basePath ? path.resolve(basePath, route.path) : route.path
+        if (fullPath === targetPath) {
+          return route.children || []
+        }
+        if (route.children && route.children.length > 0) {
+          const result = this.findChildren(route.children, targetPath, fullPath)
+          if (result) return result
+        }
+      }
+      return null
+    },
+    buildTree(children, parentPath) {
+      return children
+        .filter(c => !c.hidden)
+        .map(c => {
+          const ownPath = c.path.startsWith('/') ? c.path : path.resolve(parentPath, c.path)
+          const title = (c.meta && c.meta.title) || c.name || c.path || ''
+          const hasChildren = c.children && c.children.length > 0 && c.children.some(gc => !gc.hidden)
+          const item = {
+            ...c,
+            _ownPath: ownPath,
+            _fullPath: ownPath,
+            _title: title,
+            _hasChildren: hasChildren
+          }
+          if (hasChildren) {
+            item._children = this.buildTree(c.children, ownPath)
+          }
+          return item
+        })
+    },
+    goTo(item) {
+      if (item._hasChildren) {
+        this.$router.push({
+          path: '/redirect/subMenu',
+          query: { parent: item._ownPath, title: item._title }
+        })
+      } else if (item.path) {
+        this.$router.push(item._fullPath)
+      }
+    }
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.submenu-page {
+  padding: 16px 20px;
+  max-width: 900px;
+  margin: 0 auto;
+}
+
+.submenu-page__header {
+  margin-bottom: 16px;
+  padding-bottom: 12px;
+  border-bottom: 1px solid #ebeef5;
+}
+
+.submenu-page__parent-title {
+  font-size: 16px;
+  font-weight: 600;
+  color: #303133;
+}
+
+.submenu-page__list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 12px;
+}
+
+.submenu-page__empty {
+  text-align: center;
+  padding: 40px 0;
+  color: #909399;
+  font-size: 14px;
+}
+
+.submenu-group {
+  width: calc(50% - 6px);
+  min-width: 280px;
+  background: #fafbfc;
+  border: 1px solid #ebeef5;
+  border-radius: 6px;
+  overflow: hidden;
+  transition: border-color 0.2s;
+
+  &:hover {
+    border-color: #c0c4cc;
+  }
+}
+
+.submenu-group__title {
+  display: flex;
+  align-items: center;
+  padding: 12px 16px;
+  cursor: pointer;
+  background: #fff;
+  border-bottom: 1px solid #f0f0f0;
+  transition: background 0.15s;
+
+  &:hover {
+    background: #f5f7fa;
+  }
+}
+
+.submenu-group__icon {
+  font-size: 16px;
+  color: var(--current-color, #409EFF);
+  margin-right: 8px;
+  flex-shrink: 0;
+}
+
+.submenu-group__text {
+  font-size: 14px;
+  font-weight: 500;
+  color: #303133;
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.submenu-group__count {
+  font-size: 11px;
+  color: #909399;
+  margin-right: 6px;
+  flex-shrink: 0;
+}
+
+.submenu-group__arrow {
+  font-size: 12px;
+  color: #c0c4cc;
+  flex-shrink: 0;
+}
+
+.submenu-group__items {
+  padding: 4px 0;
+}
+
+.submenu-item {
+  display: flex;
+  align-items: center;
+  padding: 8px 16px 8px 24px;
+  cursor: pointer;
+  transition: background 0.15s;
+
+  &:hover {
+    background: #f0f2f5;
+  }
+
+  &:not(:last-child) {
+    border-bottom: 1px solid #f5f5f5;
+  }
+}
+
+.submenu-item__folder {
+  font-size: 13px;
+  color: #e6a23c;
+  margin-right: 8px;
+  flex-shrink: 0;
+}
+
+.submenu-item__doc {
+  font-size: 13px;
+  color: #909399;
+  margin-right: 8px;
+  flex-shrink: 0;
+}
+
+.submenu-item__text {
+  font-size: 13px;
+  color: #606266;
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.submenu-item__arrow {
+  font-size: 12px;
+  color: #c0c4cc;
+  flex-shrink: 0;
+  margin-left: 4px;
+}
+
+.submenu-item--leaf {
+  .submenu-item__doc {
+    color: #c0c4cc;
+  }
+}
+</style>