diff --git a/src/components/ControlPanelDialog.vue b/src/components/ControlPanelDialog.vue
index aafbf2c..6eeec11 100644
--- a/src/components/ControlPanelDialog.vue
+++ b/src/components/ControlPanelDialog.vue
@@ -9,18 +9,17 @@
         if (!loading && evt.keyCode == 27) {
           show_dialog = false;
         }
-        if(evt.keyCode == 37){//左
+        if(evt.keyCode == 37&&(current_index!=-1||multiple_select.length>1)){//左
           sub_x();
         }
-        if(evt.keyCode==38){//上
+        if(evt.keyCode==38&&(current_index!=-1||multiple_select.length>1)){//上
           sub_y();
         }
-        if(evt.keyCode==39){//右
+        if(evt.keyCode==39&&(current_index!=-1||multiple_select.length>1)){//右
           add_x();
         }
-        if(evt.keyCode==40){//下
+        if(evt.keyCode==40&&(current_index!=-1||multiple_select.length>1)){//下
           add_y();
-
         }
         if(evt.keyCode==17){//ctrl
           multiple=true;