diff --git a/apps/web-antd/src/api/aiot/alarm/index.ts b/apps/web-antd/src/api/aiot/alarm/index.ts
index f1b352e01..e8fac4533 100644
--- a/apps/web-antd/src/api/aiot/alarm/index.ts
+++ b/apps/web-antd/src/api/aiot/alarm/index.ts
@@ -18,6 +18,7 @@ export namespace AiotAlarmApi {
     algorithm?: string;
     confidence?: number;
     durationMinutes?: number;
+    durationMs?: number;
     triggerTime?: string;
     message?: string;
     bbox?: string;
@@ -29,6 +30,7 @@ export namespace AiotAlarmApi {
     handleRemark?: string;
     handledBy?: string;
     handledAt?: string;
+    lastFrameTime?: string;
     workOrderId?: number;
     aiAnalysis?: Record<string, any>;
     createdAt?: string;
diff --git a/apps/web-antd/src/views/aiot/alarm/list/data.ts b/apps/web-antd/src/views/aiot/alarm/list/data.ts
index 857edea97..d47f479df 100644
--- a/apps/web-antd/src/views/aiot/alarm/list/data.ts
+++ b/apps/web-antd/src/views/aiot/alarm/list/data.ts
@@ -96,7 +96,7 @@ export function useGridColumns(): VxeTableGridOptions['columns'] {
       slots: { default: 'confidence' },
     },
     {
-      field: 'durationMinutes',
+      field: 'durationMs',
       title: '持续时长',
       width: 125,
       slots: { default: 'duration' },
@@ -127,10 +127,10 @@ export function useGridColumns(): VxeTableGridOptions['columns'] {
       slots: { default: 'snapshot' },
     },
     {
-      field: 'createdAt',
-      title: '创建时间',
+      field: 'lastFrameTime',
+      title: '结束时间',
       minWidth: 170,
-      formatter: 'formatDateTime',
+      slots: { default: 'endTime' },
     },
     {
       title: '操作',
diff --git a/apps/web-antd/src/views/aiot/alarm/list/index.vue b/apps/web-antd/src/views/aiot/alarm/list/index.vue
index c4bf64c73..7347eae3b 100644
--- a/apps/web-antd/src/views/aiot/alarm/list/index.vue
+++ b/apps/web-antd/src/views/aiot/alarm/list/index.vue
@@ -21,6 +21,22 @@ import {
 
 defineOptions({ name: 'AiotAlarmList' });
 
+/** 格式化持续时长（毫秒 → 可读文本） */
+function formatDuration(ms: number): string {
+  if (!ms || ms <= 0) return '--';
+  if (ms < 60000) {
+    return `${Math.round(ms / 1000)} 秒`;
+  }
+  if (ms < 3600000) {
+    const minutes = Math.floor(ms / 60000);
+    const seconds = Math.round((ms % 60000) / 1000);
+    return seconds > 0 ? `${minutes} 分 ${seconds} 秒` : `${minutes} 分`;
+  }
+  const hours = Math.floor(ms / 3600000);
+  const minutes = Math.round((ms % 3600000) / 60000);
+  return minutes > 0 ? `${hours} 小时 ${minutes} 分` : `${hours} 小时`;
+}
+
 const currentAlert = ref<AiotAlarmApi.Alert | null>(null);
 const detailVisible = ref(false);
 
@@ -202,10 +218,17 @@ const [Grid, gridApi] = useVbenVxeGrid({
 
       <!-- 持续时长列 -->
       <template #duration="{ row }">
-        <span v-if="row.durationMinutes != null"
-          >{{ row.durationMinutes }} 分钟</span
-        >
-        <span v-else class="text-gray-400">-</span>
+        <span v-if="row.durationMs != null && row.durationMs > 0">{{
+          formatDuration(row.durationMs)
+        }}</span>
+        <span v-else class="text-gray-400">--</span>
+      </template>
+
+      <!-- 结束时间列 -->
+      <template #endTime="{ row }">
+        <span v-if="row.lastFrameTime">{{ row.lastFrameTime }}</span>
+        <span v-else-if="row.handledAt">{{ row.handledAt }}</span>
+        <span v-else class="text-gray-400">--</span>
       </template>
 
       <!-- 状态列 -->
@@ -311,8 +334,8 @@ const [Grid, gridApi] = useVbenVxeGrid({
           <div>
             <span class="text-gray-500">持续时长：</span>
             <span>{{
-              currentAlert.durationMinutes != null
-                ? `${currentAlert.durationMinutes} 分钟`
+              currentAlert.durationMs != null && currentAlert.durationMs > 0
+                ? formatDuration(currentAlert.durationMs)
                 : '-'
             }}</span>
           </div>