diff --git a/src/pages/Index/Index.js b/src/pages/Index/Index.js
index 5e5af78..449c190 100644
--- a/src/pages/Index/Index.js
+++ b/src/pages/Index/Index.js
@@ -69,7 +69,10 @@ const Index = () => {
         setStart(start);
       }
     }
-    if (!endId) return;
+    if (!endId) {
+      if (start) map.changeFloor(start.floorOrder);
+      return;
+    }
 
     if (mall.mcShopIDHouseNumMap && mall.mcShopIDHouseNumMap[endId])
       endId = mall.mcShopIDHouseNumMap[endId];