diff --git a/_server/editor_blockly.js b/_server/editor_blockly.js
index a128b493..86cc4461 100644
--- a/_server/editor_blockly.js
+++ b/_server/editor_blockly.js
@@ -5,9 +5,13 @@ editor_blockly = function () {
     initscript = String.raw`
 (function(){
   var getCategory = function(name){
-  for(var node of document.getElementById('toolbox').children) {
-    if(node.getAttribute('name')==name) return node;
-  }
+    for(var node of document.getElementById('toolbox').children) {
+      if(node.getAttribute('name')==name) return node;
+    }
+    var node = document.createElement('category');
+    node.setAttribute('name',name);
+    document.getElementById('toolbox').appendChild(node);
+    return node;
   }
 
   var toolboxObj = {
diff --git a/editor-mobile.html b/editor-mobile.html
index 8fb7d599..6f945a90 100644
--- a/editor-mobile.html
+++ b/editor-mobile.html
@@ -165,10 +165,6 @@
                 <button onclick="editor_blockly.parse()">解析</button>
                 <button onclick="editor_blockly.cancel()">取消</button>
                 <xml id="toolbox" style="display:none">
-                    <category name="入口方块"></category>
-                    <category name="语句块"></category>
-                    <category name="值块"></category>
-                    <category name="常见事件模板"></category>
                 </xml>
             </h3>
             <div style="position: relative;height: 100%">
diff --git a/editor.html b/editor.html
index 9041889e..cff39acc 100644
--- a/editor.html
+++ b/editor.html
@@ -164,10 +164,6 @@
                 <button onclick="editor_blockly.parse()">解析</button>
                 <button onclick="editor_blockly.cancel()">取消</button>
                 <xml id="toolbox" style="display:none">
-                    <category name="入口方块"></category>
-                    <category name="语句块"></category>
-                    <category name="值块"></category>
-                    <category name="常见事件模板"></category>
                 </xml>
             </h3>
             <div style="position: relative;height: 100%">