diff --git a/src/api/system/device/index.ts b/src/api/system/device/index.ts
index 87eae437..c268204c 100644
--- a/src/api/system/device/index.ts
+++ b/src/api/system/device/index.ts
@@ -392,14 +392,31 @@ const DeviceAPI = {
     });
   },
 
-  /** 上传应用图标（全局图标库） */
-  uploadAppIcon(packageName: string, file: File) {
+  /** 停止应用 */
+  stopApp(sn: string, packageName: string) {
+    return request({
+      url: `${DEVICE_BASE_URL}/${sn}/app/stop`,
+      method: "post",
+      data: { packageName },
+    });
+  },
+
+  /**
+   * 上传应用图标（全局图标库）
+   *
+   * @param packageName 应用包名
+   * @param file 图标文件（jpg/jpeg/png/webp）
+   * @param appName 应用名称，可选；不传则由服务端沿用已有名称
+   */
+  uploadAppIcon(packageName: string, file: File, appName?: string) {
     const formData = new FormData();
     formData.append("file", file);
     return request<any, string>({
       url: `/api/v1/app-icons/${packageName}/upload`,
       method: "post",
       data: formData,
+      // appName 服务端是 @RequestParam，走 query 而非 FormData 才能稳定绑定
+      params: appName ? { appName } : undefined,
       headers: {
         "Content-Type": "multipart/form-data",
       },
diff --git a/src/components/DeviceSn/DeviceSnDetail.vue b/src/components/DeviceSn/DeviceSnDetail.vue
index 71fd4fc8..56ce2c0c 100644
--- a/src/components/DeviceSn/DeviceSnDetail.vue
+++ b/src/components/DeviceSn/DeviceSnDetail.vue
@@ -468,10 +468,10 @@
             <el-table-column label="图标" width="70" align="center">
               <template #default="{ row }">
                 <el-image
-                  :src="row.iconUrl"
+                  :src="resolveIconUrl(row.iconUrl)"
                   fit="cover"
                   class="apk-icon"
-                  :preview-src-list="row.iconUrl ? [row.iconUrl] : []"
+                  :preview-src-list="row.iconUrl ? [resolveIconUrl(row.iconUrl)] : []"
                   preview-teleported
                 >
                   <template #error>
@@ -484,43 +484,88 @@
               prop="appName"
               label="应用名称"
               min-width="160"
+              sortable
               show-overflow-tooltip
             />
             <el-table-column
               prop="packageName"
               label="包名"
               min-width="220"
+              sortable
               show-overflow-tooltip
             />
-            <el-table-column prop="versionName" label="版本" width="100" show-overflow-tooltip />
-            <el-table-column label="大小" width="110">
+            <el-table-column prop="versionName" label="版本" width="120" show-overflow-tooltip />
+            <el-table-column label="大小" width="110" sortable sort-by="apkSize">
               <template #default="{ row }">{{ formatSize(row.apkSize) }}</template>
             </el-table-column>
-            <el-table-column label="系统应用" width="90" align="center">
+            <el-table-column
+              label="系统应用"
+              width="120"
+              align="center"
+              sortable
+              sort-by="systemApp"
+            >
               <template #default="{ row }">
                 <el-tag v-if="row.systemApp" type="info" size="small">系统</el-tag>
                 <el-tag v-else type="success" size="small">普通</el-tag>
               </template>
             </el-table-column>
-            <el-table-column label="安装时间" width="170">
+            <el-table-column
+              label="安装时间"
+              width="170"
+              sortable
+              :sort-method="
+                (a: ApkInstallInfo, b: ApkInstallInfo) =>
+                  dateValue(a.installTime) - dateValue(b.installTime)
+              "
+            >
               <template #default="{ row }">{{ formatDate(row.installTime) }}</template>
             </el-table-column>
-            <el-table-column label="操作" width="300" fixed="right">
+            <el-table-column
+              label="更新时间"
+              width="170"
+              sortable
+              :sort-method="
+                (a: ApkInstallInfo, b: ApkInstallInfo) =>
+                  dateValue(a.lastUpdateTime) - dateValue(b.lastUpdateTime)
+              "
+            >
+              <template #default="{ row }">{{ formatDate(row.lastUpdateTime) }}</template>
+            </el-table-column>
+            <el-table-column label="操作" width="160" fixed="right">
               <template #default="{ row }">
-                <el-button link type="primary" @click="handleLaunchApp(row)">打开</el-button>
-                <el-button link type="warning" @click="handleClearAppData(row)">清除数据</el-button>
-                <el-button link type="info" @click="handleUploadIcon(row)">上传图标</el-button>
-                <el-button link type="danger" @click="handleUninstallApp(row)">卸载</el-button>
+                <div class="apk-actions">
+                  <el-tooltip content="打开" placement="top">
+                    <el-button
+                      link
+                      type="primary"
+                      :icon="VideoPlay"
+                      @click="handleLaunchApp(row)"
+                    />
+                  </el-tooltip>
+                  <el-tooltip content="停止" placement="top">
+                    <el-button
+                      link
+                      type="warning"
+                      :icon="SwitchButton"
+                      @click="handleStopApp(row)"
+                    />
+                  </el-tooltip>
+                  <el-tooltip content="清除数据" placement="top">
+                    <el-button link type="warning" :icon="Brush" @click="handleClearAppData(row)" />
+                  </el-tooltip>
+                  <el-tooltip content="卸载" placement="top">
+                    <el-button link type="danger" :icon="Delete" @click="handleUninstallApp(row)" />
+                  </el-tooltip>
+                </div>
               </template>
             </el-table-column>
           </el-table>
-          <input
-            ref="iconFileInput"
-            type="file"
-            accept="image/jpeg,image/png,image/webp"
-            style="display: none"
-            @change="onIconFileChange"
-          />
+        </div>
+      </el-tab-pane>
+      <el-tab-pane label="定位信息" name="locationInfo">
+        <div class="tab-content">
+          <el-empty description="定位信息加载中..." />
         </div>
       </el-tab-pane>
 
@@ -541,12 +586,6 @@
           <el-empty description="操作日志加载中..." />
         </div>
       </el-tab-pane>
-
-      <el-tab-pane label="定位信息" name="locationInfo">
-        <div class="tab-content">
-          <el-empty description="定位信息加载中..." />
-        </div>
-      </el-tab-pane>
     </el-tabs>
   </div>
 </template>
@@ -571,6 +610,9 @@ import {
   Delete,
   RefreshRight,
   ArrowDown,
+  VideoPlay,
+  Brush,
+  SwitchButton,
 } from "@element-plus/icons-vue";
 import { ElMessage, ElMessageBox } from "element-plus";
 
@@ -650,6 +692,22 @@ const apkList = ref<ApkInstallInfo[]>([]);
 /** 应用信息是否已加载（懒加载，仅首次进入 tab 时拉取） */
 const apkLoaded = ref(false);
 
+/**
+ * 拼接应用图标完整访问地址
+ *
+ * 后端返回的是相对路径（如 /static/app_icon/{md5}.png）。
+ * img/el-image 的 src 是浏览器原生请求，不经过 axios，拿不到 baseURL，
+ * 因此必须手动补上代理前缀，否则请求会打到前端 dev server 上导致 404。
+ */
+function resolveIconUrl(url?: string | null): string {
+  if (!url) return "";
+  // 已是绝对地址（http/https）或 base64，直接返回
+  if (/^(https?:)?\/\//.test(url) || url.startsWith("data:")) return url;
+  const baseApi = import.meta.env.VITE_APP_BASE_API ?? "";
+  // 避免 baseApi 结尾与 url 开头的斜杠重复
+  return `${baseApi.replace(/\/$/, "")}${url.startsWith("/") ? "" : "/"}${url}`;
+}
+
 /** 空值统一显示占位符 */
 function formatText(value?: string | number | null): string {
   return value === undefined || value === null || value === "" ? "-" : String(value);
@@ -683,6 +741,14 @@ function formatDate(value?: Date | string | null): string {
   return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())} ${pad(date.getHours())}:${pad(date.getMinutes())}:${pad(date.getSeconds())}`;
 }
 
+/** 将时间转为可用于排序的时间戳，无效值视为 0（排在最前） */
+function dateValue(value?: Date | string | null): number {
+  if (value === undefined || value === null || value === "") return 0;
+  const date = value instanceof Date ? value : new Date(value);
+  const time = date.getTime();
+  return Number.isNaN(time) ? 0 : time;
+}
+
 function assignTo<T extends object>(reactiveObj: T, data?: object) {
   Object.keys(reactiveObj as object).forEach(
     (key) => delete (reactiveObj as Record<string, unknown>)[key]
@@ -866,28 +932,17 @@ const handleUninstallApp = (row: ApkInstallInfo) => {
     .catch(() => {});
 };
 
-/** 图标文件输入框 */
-const iconFileInput = ref<HTMLInputElement>();
-/** 当前准备上传图标的应用 */
-let uploadIconTarget: ApkInstallInfo | null = null;
-
-/** 上传图标：点击触发文件选择 */
-const handleUploadIcon = (row: ApkInstallInfo) => {
-  uploadIconTarget = row;
-  iconFileInput.value?.click();
-};
-
-/** 选择图标文件后上传 */
-const onIconFileChange = (event: Event) => {
-  const input = event.target as HTMLInputElement;
-  const file = input.files?.[0];
-  input.value = "";
-  if (!file || !uploadIconTarget) return;
-  const row = uploadIconTarget;
-  DeviceAPI.uploadAppIcon(row.packageName ?? "", file)
+/** 停止应用 */
+const handleStopApp = (row: ApkInstallInfo) => {
+  ElMessageBox.confirm(`确定要停止运行应用「${row.appName || row.packageName}」吗？`, "提示", {
+    confirmButtonText: "确定",
+    cancelButtonText: "取消",
+    type: "warning",
+  })
     .then(() => {
-      ElMessage.success("图标上传成功");
-      loadApkInfo(props.serialno);
+      DeviceAPI.stopApp(props.serialno, row.packageName ?? "").then(() => {
+        ElMessage.success("停止应用指令已发送");
+      });
     })
     .catch(() => {});
 };
@@ -1140,6 +1195,24 @@ const handleMoreActions = (command: string) => {
         margin-bottom: 12px;
       }
 
+      .apk-actions {
+        display: flex;
+        gap: 6px;
+        align-items: center;
+
+        .el-button {
+          padding: 4px;
+          margin-left: 0;
+          font-size: 20px;
+        }
+
+        .el-button .el-icon,
+        .el-button svg {
+          width: 1.2em;
+          height: 1.2em;
+        }
+      }
+
       .apk-icon {
         width: 36px;
         height: 36px;