diff --git a/src/api/canteen/canteenSpu.ts b/src/api/canteen/canteenSpu.ts
index 800e743e..98dcd9dd 100644
--- a/src/api/canteen/canteenSpu.ts
+++ b/src/api/canteen/canteenSpu.ts
@@ -55,6 +55,15 @@ export function putObj(obj?: Object) {
 	})
 }
 
+/** 批量赋值菜品封面图 */
+export function batchUpdatePic(data: { ids: Array<string | number>; picUrl: string }) {
+	return request({
+		url: "/canteen/canteenSpu/batchPic",
+		method: "put",
+		data,
+	})
+}
+
 /** Excel 导入菜品：importMode=cover|skip|force；兼容 cover=true/false */
 export function importSpu(data: FormData, params: Object) {
 	return request({
diff --git a/src/layout/navMenu/horizontal.vue b/src/layout/navMenu/horizontal.vue
index 92ccdbe0..86aa8b50 100644
--- a/src/layout/navMenu/horizontal.vue
+++ b/src/layout/navMenu/horizontal.vue
@@ -4,7 +4,7 @@
       <el-menu router :default-active="state.defaultActive" :ellipsis="false" background-color="transparent"
                mode="horizontal">
         <template v-for="val in menuLists">
-          <el-sub-menu :index="val.path" v-if="val.children && val.children.length > 0" :key="val.path">
+          <el-sub-menu :index="toSubMenuIndex(val.path)" v-if="val.children && val.children.length > 0" :key="val.path">
             <template #title>
               <SvgIcon :name="val.meta.icon"/>
               <span class="font-semibold">{{ $t(val.name) }}</span>
@@ -38,6 +38,7 @@ import {useRoutesList} from '/@/stores/routesList';
 import {useThemeConfig} from '/@/stores/themeConfig';
 import other from '/@/utils/other';
 import mittBus from '/@/utils/mitt';
+import { toSubMenuIndex } from '/@/layout/navMenu/menuIndex';
 
 // 引入组件
 const SubItem = defineAsyncComponent(() => import('/@/layout/navMenu/subItem.vue'));
diff --git a/src/layout/navMenu/menuIndex.ts b/src/layout/navMenu/menuIndex.ts
new file mode 100644
index 00000000..e4db8457
--- /dev/null
+++ b/src/layout/navMenu/menuIndex.ts
@@ -0,0 +1,4 @@
+/** 目录型菜单的 el-sub-menu index，避免与叶子路由 path 冲突 */
+export function toSubMenuIndex(path: string) {
+	return `sub:${path || ""}`
+}
diff --git a/src/layout/navMenu/subItem.vue b/src/layout/navMenu/subItem.vue
index 45a173c7..9220933a 100644
--- a/src/layout/navMenu/subItem.vue
+++ b/src/layout/navMenu/subItem.vue
@@ -1,6 +1,6 @@
 <template>
 	<template v-for="val in chils">
-		<el-sub-menu :index="val.path" :key="val.path" v-if="val.children && val.children.length > 0">
+		<el-sub-menu :index="toSubMenuIndex(val.path)" :key="val.path" v-if="val.children && val.children.length > 0">
 			<template #title>
 				<SvgIcon :name="val.meta.icon" />
 				<span>{{ $t(val.name) }}</span>
@@ -28,6 +28,7 @@
 import { computed } from 'vue';
 import { RouteRecordRaw } from 'vue-router';
 import other from '/@/utils/other';
+import { toSubMenuIndex } from '/@/layout/navMenu/menuIndex';
 
 // 定义父组件传过来的值
 const props = defineProps({
diff --git a/src/layout/navMenu/vertical.vue b/src/layout/navMenu/vertical.vue
index b384221f..cb14ec3b 100644
--- a/src/layout/navMenu/vertical.vue
+++ b/src/layout/navMenu/vertical.vue
@@ -1,7 +1,7 @@
 <template>
 	<el-menu
+		ref="menuRef"
 		router
-		:key="state.menuRenderKey"
 		:default-active="state.defaultActive"
 		:default-openeds="state.defaultOpeneds"
 		background-color="transparent"
@@ -10,8 +10,8 @@
 		:collapse-transition="false"
 	>
 		<template v-for="val in menuLists">
-			<!-- 三级菜单 -->
-			<el-sub-menu :index="val.path" v-if="val.children && val.children.length > 0" :key="val.path">
+			<!-- 三级菜单：index 必须与叶子 path 隔离，避免目录 path 与子路由相同导致自动折叠 -->
+			<el-sub-menu :index="toSubMenuIndex(val.path)" v-if="val.children && val.children.length > 0" :key="val.path">
 				<template #title>
 					<SvgIcon :name="val.meta.icon" />
 					<span>{{ $t(val.name) }}</span>
@@ -38,6 +38,7 @@
 import { RouteRecordRaw } from "vue-router"
 import { useThemeConfig } from "/@/stores/themeConfig"
 import other from "/@/utils/other"
+import { toSubMenuIndex } from "/@/layout/navMenu/menuIndex"
 
 // 引入组件
 const SubItem = defineAsyncComponent(() => import("/@/layout/navMenu/subItem.vue"))
@@ -55,10 +56,10 @@ const props = defineProps({
 const storesThemeConfig = useThemeConfig()
 const { themeConfig } = storeToRefs(storesThemeConfig)
 const route = useRoute()
+const menuRef = ref()
 const state = reactive({
 	defaultActive: route.meta.isDynamic ? route.meta.isDynamicPath : route.path,
 	defaultOpeneds: [] as string[],
-	menuRenderKey: 0,
 	isCollapse: false,
 })
 
@@ -78,42 +79,54 @@ const setParentHighlight = (currentRoute: RouteToFrom) => {
 	else return path
 }
 
-/** 找到当前激活项的所有父级 path，保持左侧分组展开 */
+/**
+ * 找到当前激活项的所有父级 submenu index。
+ * 有 children 的节点只作为目录，不参与 path 相等匹配（避免目录 path = 子路由 path 时提前命中、漏掉展开）。
+ */
 const findParentPaths = (menus: RouteItems, active: string, trail: string[] = []): string[] | null => {
 	for (const m of menus || []) {
 		if (!m) continue
+		if (m.children && m.children.length > 0) {
+			const found = findParentPaths(m.children as RouteItems, active, [...trail, toSubMenuIndex(m.path)])
+			if (found) return found
+			continue
+		}
 		if (m.path === active) {
 			return trail
 		}
-		if (m.children && m.children.length > 0) {
-			const found = findParentPaths(m.children as RouteItems, active, [...trail, m.path])
-			if (found) return found
-		}
 	}
 	// 隐藏子路由 / 详情页：按前缀打开最近父级
 	for (const m of menus || []) {
 		if (!m?.children?.length) continue
 		if (active.startsWith(`${m.path}/`)) {
-			const found = findParentPaths(m.children as RouteItems, active, [...trail, m.path])
+			const found = findParentPaths(m.children as RouteItems, active, [...trail, toSubMenuIndex(m.path)])
 			if (found) return found
-			return [...trail, m.path]
+			return [...trail, toSubMenuIndex(m.path)]
 		}
 	}
 	return null
 }
 
+const ensureParentsOpen = (openeds: string[]) => {
+	nextTick(() => {
+		const menu = menuRef.value as { open?: (i: string) => void } | undefined
+		if (!menu?.open) return
+		openeds.forEach((path) => {
+			try {
+				menu.open!(path)
+			} catch {
+				// ignore
+			}
+		})
+	})
+}
+
 const refreshMenuState = (currentRoute: RouteToFrom = route) => {
 	const active = setParentHighlight(currentRoute) as string
 	const openeds = findParentPaths(menuLists.value, active) || []
-	const sameActive = state.defaultActive === active
-	const sameOpeneds =
-		state.defaultOpeneds.length === openeds.length && state.defaultOpeneds.every((p, i) => p === openeds[i])
 	state.defaultActive = active
 	state.defaultOpeneds = openeds
-	// 仅在激活项或父级展开变化时重渲染，避免无意义闪烁
-	if (!sameActive || !sameOpeneds) {
-		state.menuRenderKey += 1
-	}
+	ensureParentsOpen(openeds)
 }
 
 // 打开外部链接
@@ -130,13 +143,12 @@ onBeforeRouteUpdate((to) => {
 	const clientWidth = document.body.clientWidth
 	if (clientWidth < 1000) themeConfig.value.isCollapse = false
 })
-// 侧栏菜单数据被经典分栏/路由过滤重建后，重新带上父级展开
+// 菜单列表整体替换时（经典分栏切换）再同步一次
 watch(
-	menuLists,
+	() => menuLists.value.map((m) => m.path).join("|"),
 	() => {
 		refreshMenuState(route)
 	},
-	{ deep: true },
 )
 // 设置菜单的收起/展开
 watch(
diff --git a/src/views/canteen/canteenDailyMenu/index.vue b/src/views/canteen/canteenDailyMenu/index.vue
index 30ee0714..1b0e0dfd 100644
--- a/src/views/canteen/canteenDailyMenu/index.vue
+++ b/src/views/canteen/canteenDailyMenu/index.vue
@@ -643,7 +643,12 @@ const submitImport = async () => {
 		importUploadRef.value?.clearFiles()
 		refreshMenuData()
 	} catch (err: any) {
-		useMessage().error(err.msg || "导入失败")
+		const tip = String(err?.msg || "导入失败")
+		ElMessageBox.alert(tip, "导入失败", {
+			confirmButtonText: "知道了",
+			customClass: "daily-menu-import-error-box",
+			dangerouslyUseHTMLString: false,
+		})
 	} finally {
 		importLoading.value = false
 	}
@@ -828,3 +833,20 @@ onBeforeUnmount(() => {
 	border-left: 2px solid rgb(255, 187, 0);
 }
 </style>
+
+<style lang="scss">
+/* MessageBox 挂到 body，需非 scoped */
+.daily-menu-import-error-box {
+	max-width: 640px;
+
+	.el-message-box__message {
+		max-height: 420px;
+		overflow: auto;
+		white-space: pre-wrap;
+		word-break: break-word;
+		line-height: 1.55;
+		font-size: 13px;
+		color: #303133;
+	}
+}
+</style>
diff --git a/src/views/canteen/canteenSpu/index.vue b/src/views/canteen/canteenSpu/index.vue
index a9c9ef42..e27ff7b0 100644
--- a/src/views/canteen/canteenSpu/index.vue
+++ b/src/views/canteen/canteenSpu/index.vue
@@ -48,6 +48,17 @@
 					>
 						删 除
 					</el-button>
+					<el-button
+						plain
+						:disabled="multiple"
+						icon="Picture"
+						type="primary"
+						class="ml10"
+						v-auth="'canteen_canteenSpu_edit'"
+						@click="openBatchPic"
+					>
+						批量赋值图片
+					</el-button>
 					<right-toolbar
 						v-model:showSearch="showSearch"
 						:export="'canteen_canteenSpu_export'"
@@ -173,13 +184,30 @@
 				<el-button type="primary" :loading="importLoading" @click="submitImport">开始导入</el-button>
 			</template>
 		</el-dialog>
+
+		<el-dialog v-model="batchPicVisible" title="批量赋值封面图" width="520px" :close-on-click-modal="false" destroy-on-close>
+			<el-alert
+				type="info"
+				:closable="false"
+				show-icon
+				class="mb-4"
+				:title="`已选 ${selectObjs.length} 道菜，将统一设置同一张封面（可上传或从图库选择，多道菜共用同一地址）。`"
+			/>
+			<div class="batch-pic-upload">
+				<upload-img v-model:imageUrl="batchPicUrl" enable-library />
+			</div>
+			<template #footer>
+				<el-button @click="batchPicVisible = false">取消</el-button>
+				<el-button type="primary" :loading="batchPicLoading" @click="submitBatchPic">确定赋值</el-button>
+			</template>
+		</el-dialog>
 	</div>
 </template>
 
 <script setup lang="ts" name="systemCanteenSpu">
 import type { UploadFile, UploadInstance } from "element-plus"
 import { BasicTableProps, useTable } from "/@/hooks/table"
-import { fetchList, delObjs, importSpu } from "/@/api/canteen/canteenSpu"
+import { fetchList, delObjs, importSpu, batchUpdatePic } from "/@/api/canteen/canteenSpu"
 import { useMessage, useMessageBox } from "/@/hooks/message"
 import { useDict } from "/@/hooks/dict"
 import { displayPrice } from "/@/utils/formatMoney"
@@ -188,6 +216,7 @@ import { downBlobFile } from "/@/utils/other"
 
 // 引入组件
 const FormDialog = defineAsyncComponent(() => import("./form.vue"))
+const UploadImg = defineAsyncComponent(() => import("/@/components/Upload/Image.vue"))
 
 const { spu_status, is_show } = useDict("spu_status", "is_show")
 // 定义变量内容
@@ -324,6 +353,45 @@ const selectionChangHandle = (objs: { id: string }[]) => {
 	multiple.value = !objs.length
 }
 
+const batchPicVisible = ref(false)
+const batchPicLoading = ref(false)
+const batchPicUrl = ref("")
+
+const openBatchPic = () => {
+	if (!selectObjs.value?.length) {
+		useMessage().warning("请先勾选要赋值图片的菜品")
+		return
+	}
+	batchPicUrl.value = ""
+	batchPicVisible.value = true
+}
+
+const submitBatchPic = async () => {
+	if (!selectObjs.value?.length) {
+		useMessage().warning("请先勾选菜品")
+		return
+	}
+	if (!batchPicUrl.value) {
+		useMessage().warning("请上传或从图库选择封面图")
+		return
+	}
+	batchPicLoading.value = true
+	try {
+		const res: any = await batchUpdatePic({
+			ids: selectObjs.value.map((id: any) => String(id)),
+			picUrl: batchPicUrl.value,
+		})
+		useMessage().success(res.msg || "赋值成功")
+		batchPicVisible.value = false
+		batchPicUrl.value = ""
+		getDataList()
+	} catch (err: any) {
+		useMessage().error(err.msg || "赋值失败")
+	} finally {
+		batchPicLoading.value = false
+	}
+}
+
 // 删除操作
 const handleDelete = async (ids: string[]) => {
 	try {
@@ -349,4 +417,10 @@ const handleDelete = async (ids: string[]) => {
 	align-items: flex-start;
 	gap: 8px;
 }
+
+.batch-pic-upload {
+	display: flex;
+	justify-content: center;
+	padding: 8px 0 4px;
+}
 </style>