修改

src/views/datacenter.vue

@@ -475,8 +475,9 @@ export default {
           that.$refs.supermap.clearM(false)
           that.$refs.supermap.setMarkers(that.markersList)
         })
+      }else{
+        that.$refs.supermap.clearM(false)
       }
-      that.$refs.supermap.clearM(false)
     }
 
   }