diff --git a/web/src/views/HandDevice/Home/components/services/popup.service.ts b/web/src/views/HandDevice/Home/components/services/popup.service.ts
index 261df91..113ce70 100644
--- a/web/src/views/HandDevice/Home/components/services/popup.service.ts
+++ b/web/src/views/HandDevice/Home/components/services/popup.service.ts
@@ -51,7 +51,7 @@ export class PopupService {
 
       <div>类型：${markerData.gasChemical}</div>
       <div>数值：${markerData.value} ${markerData.unit ? markerData.unit : ''}</div>
-      <div>信号：${markerData.sig}</div>
+      <div>信号：${markerData.sig||''}</div>
       <div>时间：${markerData.timeStr ? markerData.timeStr : '-'} </div>
       <div>
         坐标：${markerData.coordinates[0].toFixed(6)}, ${markerData.coordinates[1].toFixed(6)}/${markerData.gpsType===0?"GPS":"基站"}
diff --git a/web/src/views/HandDevice/Home/index.vue b/web/src/views/HandDevice/Home/index.vue
index e447782..0839312 100644
--- a/web/src/views/HandDevice/Home/index.vue
+++ b/web/src/views/HandDevice/Home/index.vue
@@ -56,7 +56,7 @@
               <div><span>电量：</span>{{ item.battery }}</div>
               <div><span>数值：</span>{{ item.value }} {{ item.unit }}</div>
                
-              <div><span>信号：</span>{{ item.sig }}</div> 
+              <div><span>信号：</span>{{ item.sig||'' }}</div> 
 
               <div><span>时间：</span>{{ item.timeStr }}</div>