diff --git a/_server/editor.js b/_server/editor.js
index 47ca6fa3..823c60d8 100644
--- a/_server/editor.js
+++ b/_server/editor.js
@@ -627,7 +627,10 @@ editor.prototype.drawInitData = function (icons) {
     editor.uivalues.foldPerCol = editor.config.get('foldPerCol', 50);
     // var imgNames = Object.keys(images);  //还是固定顺序吧；
     editor.setLastUsedType(editor.config.get('lastUsedType', 'recent'));
-    editor.uivalues.lastUsed = editor.config.get("lastUsed", []);
+    var ids = editor.ids.map(function (x) {return x.id || "";});
+    editor.uivalues.lastUsed = editor.config.get("lastUsed", []).filter(function (one) {
+        return ids.indexOf(one.id) >= 0;
+    });
     var imgNames = ["terrains", "animates", "enemys", "enemy48", "items", "npcs", "npc48", "autotile"];
 
     for (var ii = 0; ii < imgNames.length; ii++) {
diff --git a/_server/editor_datapanel.js b/_server/editor_datapanel.js
index 1439bade..95f2fc31 100644
--- a/_server/editor_datapanel.js
+++ b/_server/editor_datapanel.js
@@ -334,6 +334,14 @@ editor_datapanel_wrapper = function (editor) {
                     printe('不得使用保留关键字作为id！');
                     return;
                 }
+                if (editor_mode.info.images == 'autotile') {
+                    printe('自动元件不可修改id！');
+                    return;
+                }
+                if (editor_mode.info.idnum >= 10000) {
+                    printe('额外素材不可修改id！');
+                    return;
+                }
                 editor.file.changeIdAndIdnum(id, null, editor_mode.info, function (err) {
                     if (err) {
                         printe(err);