diff --git a/frontend/src/views/HistoryView.vue b/frontend/src/views/HistoryView.vue
index d7e85e6..589640b 100644
--- a/frontend/src/views/HistoryView.vue
+++ b/frontend/src/views/HistoryView.vue
@@ -56,7 +56,7 @@
               <template v-if="task.status === 'completed' && task.oss_url">
                 <img v-if="task.build_type === 'Ad_Hoc' && task.qr_code_path"
                      :src="task.qr_code_path" alt="QR" class="qr-thumb"
-                     @click="task._showQr = !task._showQr">
+                     @click="showQrPreview(task)">
                 <a v-if="task.build_type === 'App_Store'" :href="task.oss_url" target="_blank" class="download-link">下载 IPA</a>
               </template>
               <span v-else class="text-muted">-</span>
@@ -75,6 +75,22 @@
       </table>
     </div>
 
+    <!-- 二维码放大弹窗 -->
+    <div v-if="qrPreview" class="modal-overlay" @click.self="qrPreview = null">
+      <div class="qr-preview-modal">
+        <div class="modal-header">
+          <h3>{{ qrPreview.app_name }} - 下载二维码</h3>
+          <button class="modal-close" @click="qrPreview = null">&times;</button>
+        </div>
+        <img :src="qrPreview.qr_code_path" alt="QR Code" class="qr-preview-img">
+        <div class="qr-preview-info">
+          <p><strong>App:</strong> {{ qrPreview.app_name }}</p>
+          <p><strong>Scheme:</strong> {{ qrPreview.scheme_name }}</p>
+          <p><strong>类型:</strong> {{ qrPreview.build_type }}</p>
+        </div>
+      </div>
+    </div>
+
     <!-- 日志弹窗 -->
     <Transition name="modal">
       <div v-if="showLogModal" class="modal-overlay" @click.self="closeLogModal">
@@ -163,8 +179,13 @@ const logTask = ref(null)
 const logLines = ref([])
 const logContainer = ref(null)
 const showVerboseLogs = ref(false)
+const qrPreview = ref(null)
 let logWs = null
 
+const showQrPreview = (task) => {
+  qrPreview.value = task
+}
+
 const filteredTasks = computed(() => {
   return tasks.value.filter(task => {
     // 默认隐藏已取消的任务
@@ -467,4 +488,10 @@ const errorCategoryLabel = (cat) => {
 .qr-thumb:hover { border-color: #1890ff; }
 .btn-danger { color: #ff4d4f; border-color: #ff4d4f; }
 .btn-danger:hover { background: #ff4d4f; color: white; }
+
+/* 二维码放大弹窗 */
+.qr-preview-modal { background: white; border-radius: 12px; padding: 24px; width: 380px; text-align: center; }
+.qr-preview-img { width: 260px; height: 260px; border: 1px solid #f0f0f0; border-radius: 8px; margin: 16px 0; }
+.qr-preview-info { text-align: left; padding: 12px 16px; background: #fafafa; border-radius: 8px; }
+.qr-preview-info p { margin: 6px 0; font-size: 13px; color: #555; }
 </style>