diff --git a/permission_list.txt b/permission_list.txt
index f298ebf..0b4aae1 100644
--- a/permission_list.txt
+++ b/permission_list.txt
@@ -52,10 +52,10 @@ system.roles.add                  # 角色权限-新增（筛选栏中的"新增
 system.roles.edit                 # 角色权限-编辑（表格操作列中的"编辑"按钮）
 system.roles.delete               # 角色权限-删除（表格操作列中的"删除"按钮，红色危险样式）
 
-system.notices.view               # 公告管理-查看（页面默认查看权限）
-system.notices.add                # 公告管理-新增（筛选栏中的"新增"按钮）
-system.notices.edit               # 公告管理-编辑（表格操作列中的"修改"按钮）
-system.notices.delete             # 公告管理-删除（表格操作列中的"删除"按钮，红色危险样式）
+system.announcement.view          # 公告管理-查看（页面默认查看权限）
+system.announcement.save          # 公告管理-新增（筛选栏中的"新增"按钮）
+system.announcement.edit          # 公告管理-编辑（表格操作列中的"修改"按钮）
+system.announcement.del           # 公告管理-删除（表格操作列中的"删除"按钮，红色危险样式）
 
 system.logs.view                  # 操作日志-查看（页面默认查看权限，无操作列按钮）
 
diff --git a/src/api/notices/index.ts b/src/api/notices/index.ts
index 3e2e884..b839fbb 100644
--- a/src/api/notices/index.ts
+++ b/src/api/notices/index.ts
@@ -48,7 +48,7 @@ export function updateNotice(params: NoticeSaveParams): Promise<ApiResult<null>>
   return post(ANNOUNCEMENT_UPDATE, params);
 }
 
-/** 删除公告（物理删除，单个）— POST /admin/sys/announcement/delete?id=xxx */
+/** 删除公告（物理删除，单个）— POST /admin/sys/announcement/delete（id 放在请求体） */
 export function deleteNotice(id: number): Promise<ApiResult<null>> {
-  return post(ANNOUNCEMENT_DELETE, undefined, { id: String(id) });
+  return post(ANNOUNCEMENT_DELETE, { id });
 }
diff --git a/src/config/fallbackRoutes.ts b/src/config/fallbackRoutes.ts
index af5d3a6..04b05cf 100644
--- a/src/config/fallbackRoutes.ts
+++ b/src/config/fallbackRoutes.ts
@@ -165,15 +165,13 @@ export const FALLBACK_MENU_NODES: MenuNode[] = [
         permission: 'system.roles.view',
       },
       {
-        // 公告管理：后端 /op/permission 尚未下发 system.notices.view 权限码，
-        // 暂不挂 permission（否则整条菜单会被权限过滤掉）；后端配置后可在下方补回
-        // permission: 'system.notices.view',
         id: 'system_notices',
         name: '公告管理',
         path: 'system/notices',
         component: 'system/notices',
         componentName: 'SystemNotices',
         icon: 'AiOutlineSound',
+        permission: 'system.announcement.view',
       },
       {
         id: 'system_params',
diff --git a/src/pages/system/notices/components/NoticeFormModal.tsx b/src/pages/system/notices/components/NoticeFormModal.tsx
index dff6891..923b285 100644
--- a/src/pages/system/notices/components/NoticeFormModal.tsx
+++ b/src/pages/system/notices/components/NoticeFormModal.tsx
@@ -7,6 +7,7 @@ import { getNoticeList, type NoticeVO } from '../model/services';
 import {
   TITLE_MAX,
   CONTENT_MAX,
+  DISPLAY_TIME_FORMAT,
   SUBMIT_TIME_FORMAT,
   typeRules,
   timeRangeRules,
@@ -56,10 +57,11 @@ export default defineComponent({
         Object.assign(formData, getDefaultForm());
         return;
       }
-      const startTime = record.startTime ? dayjs(record.startTime) : null;
-      const endTime = record.endTime ? dayjs(record.endTime) : null;
+      // 编辑回填时秒统一归零，界面只精确到分钟
+      const startTime = record.startTime ? dayjs(record.startTime).second(0) : null;
+      const endTime = record.endTime ? dayjs(record.endTime).second(0) : null;
       Object.assign(formData, {
-        type: record.type || 1,
+        type: Number(record.type) || 1,
         timeRange: startTime?.isValid() && endTime?.isValid() ? [startTime, endTime] : null,
         title: record.title || '',
         context: record.context || '',
@@ -81,7 +83,11 @@ export default defineComponent({
     const validateTimeRange = async (startTime: Dayjs, endTime: Dayjs): Promise<boolean> => {
       timeRangeChecking.value = true;
       try {
-        const res = await getNoticeList({ page: '1', limit: '999', type: formData.type });
+        const res = await getNoticeList({
+          page: '1',
+          limit: '999',
+          type: Number(formData.type) || 1,
+        });
         if (res.code != 200) return true;
 
         const editingId = props.record ? String(props.record.id) : '';
@@ -119,7 +125,7 @@ export default defineComponent({
       if (!isTimeRangeValid) return;
 
       props.onSave({
-        type: formData.type,
+        type: Number(formData.type) || 1,
         title: formData.title.trim(),
         context: formData.context.trim(),
         startTime: startTime.format(SUBMIT_TIME_FORMAT),
@@ -146,24 +152,28 @@ export default defineComponent({
             {/* 类型 */}
             <Form.Item label="类型" name="type" rules={typeRules}>
               <Select
-                value={formData.type}
+                value={Number(formData.type)}
                 options={NOTICE_TYPE_OPTIONS as any}
                 placeholder="请选择"
-                onUpdate:value={(val: any) => (formData.type = val as number)}
+                onUpdate:value={(val: any) => (formData.type = Number(val) || 1)}
               />
             </Form.Item>
 
             {/* 生效时间 */}
             <Form.Item label="生效时间" name="timeRange" rules={timeRangeRules}>
               <RangePicker
-                showTime
-                format={SUBMIT_TIME_FORMAT}
+                showTime={{ format: 'HH:mm' }}
+                format={DISPLAY_TIME_FORMAT}
                 value={formData.timeRange as any}
                 placeholder={['开始时间', '结束时间']}
                 style={{ width: '100%' }}
                 allowClear
                 onUpdate:value={(val: any) => {
-                  formData.timeRange = (val as [Dayjs, Dayjs]) || null;
+                  const range =
+                    Array.isArray(val) && val.length === 2
+                      ? ([val[0].second(0), val[1].second(0)] as [Dayjs, Dayjs])
+                      : null;
+                  formData.timeRange = range;
                   formRef.value?.clearValidate('timeRange');
                 }}
               />
diff --git a/src/pages/system/notices/index.tsx b/src/pages/system/notices/index.tsx
index 908b1d3..45463d3 100644
--- a/src/pages/system/notices/index.tsx
+++ b/src/pages/system/notices/index.tsx
@@ -63,7 +63,7 @@ function confirmDelete({ record, onOk }: { record: any; onOk: (record: any) => v
   Modal.confirm({
     title: '删除确认',
     class: 'deleteConfirmModal',
-    content: `确认要删除“${record.title}”吗？`,
+    content: `确认删除“${record.title}”吗？`,
     okText: '确认',
     cancelText: '取消',
     okButtonProps: { danger: true } as ModalProps['okButtonProps'],
@@ -100,17 +100,17 @@ export default defineComponent({
     const { hasPermission, hasAnyPermission } = usePermissionStore();
 
     // 公告模块的权限码后端尚未配置时（/op/permission 未下发），按钮默认放行，
-    // 待后端下发任意一个 system.notices.* 权限码后自动切换为按码控制
+    // 待后端下发任意一个 system.announcement.* 权限码后自动切换为按码控制
     const noticePermsConfigured = hasAnyPermission([
-      'system.notices.view',
-      'system.notices.add',
-      'system.notices.edit',
-      'system.notices.delete',
+      'system.announcement.view',
+      'system.announcement.save',
+      'system.announcement.edit',
+      'system.announcement.del',
     ]);
-    const canAdd = !noticePermsConfigured || hasPermission('system.notices.add');
+    const canAdd = !noticePermsConfigured || hasPermission('system.announcement.save');
     const operationPermissions = {
-      canEdit: !noticePermsConfigured || hasPermission('system.notices.edit'),
-      canDelete: !noticePermsConfigured || hasPermission('system.notices.delete'),
+      canEdit: !noticePermsConfigured || hasPermission('system.announcement.edit'),
+      canDelete: !noticePermsConfigured || hasPermission('system.announcement.del'),
     };
 
     const triggerDelete = (record: any) => confirmDelete({ record, onOk: handleDelete });
diff --git a/src/pages/system/notices/model/useNoticeModel.ts b/src/pages/system/notices/model/useNoticeModel.ts
index bc3c729..71421af 100644
--- a/src/pages/system/notices/model/useNoticeModel.ts
+++ b/src/pages/system/notices/model/useNoticeModel.ts
@@ -19,11 +19,8 @@ import {
 // 常量
 // ============================================================
 
-/** 公告类型选项（筛选 / 表单共用） */
-export const NOTICE_TYPE_OPTIONS = [
-  { value: 1, label: '首页公告提示' },
-  { value: 2, label: '产品更新公告' },
-] as const;
+/** 公告类型选项（筛选 / 表单共用）：目前仅开放「首页公告提示」 */
+export const NOTICE_TYPE_OPTIONS = [{ value: 1, label: '首页公告提示' }] as const;
 
 /** 公告类型文案映射（兜底，后端 typeName 为空时使用） */
 export const NOTICE_TYPE_MAP: Record<number, string> = {
@@ -67,9 +64,10 @@ export function useNoticeModel() {
     formatResult: (res) => res,
   });
 
-  const dataSource = computed(() => {
-    const res = data.value;
-    return res ? (res as any).data?.list || [] : [];
+  const dataSource = computed<NoticeVO[]>(() => {
+    const list = (data.value as any)?.data?.list || [];
+    // 后端 type 可能返回字符串，统一归一化为数字，保证编辑弹窗 Select 能匹配选项
+    return list.map((item: NoticeVO) => ({ ...item, type: Number(item.type) }));
   });
 
   useEffect(() => {