diff --git a/editor.html b/editor.html
index 1e23c33d..81b028f5 100644
--- a/editor.html
+++ b/editor.html
@@ -411,6 +411,7 @@ if (location.protocol.indexOf("http")!=0) {
 <script src='_server/editor_file.js'></script>
 <script src='_server/editor_mode.js'></script>
 <script src='_server/vm.js'></script>
+<script src='libs/thirdparty/lz-string.min.js'></script>
 <script id='mainScript' src='main.js'></script>
 <script>
     //所有全局量
diff --git a/libs/maps.js b/libs/maps.js
index 6bab7502..a35ce7e7 100644
--- a/libs/maps.js
+++ b/libs/maps.js
@@ -384,8 +384,10 @@ maps.prototype.drawMap = function (mapName, callback) {
     if (main.mode=='editor'){
         main.editor.updateMap = function(){
             core.removeGlobalAnimate(null, null, true);
+            core.clearMap('bg', 0, 0, 416, 416);
             core.clearMap('event', 0, 0, 416, 416);
             core.clearMap('event2', 0, 0, 416, 416);
+            drawBg();
             drawEvent();
             core.setGlobalAnimate(core.values.animateSpeed);
         }