diff --git a/static/css/wide.css b/static/css/wide.css
index 1e79415..414f05f 100644
--- a/static/css/wide.css
+++ b/static/css/wide.css
@@ -83,6 +83,7 @@
 
 .frame li.disabled {
     color: #999;
+    text-shadow: 0 0 0 !important;
 }
 
 .frame li:hover,
@@ -303,7 +304,7 @@
 .bottom-window-group .output .test-error,
 .bottom-window-group .output .install-error, 
 .bottom-window-group .output .get-error {
-    color: #eb0000;
+    color: #9d0000;
 }
 
 .bottom-window-group table {
@@ -364,7 +365,7 @@
     float: right;
     display: none;
     cursor: pointer;
-    background-color: #eb0000;
+    background-color: #9d0000;
     color: #FFF;
     margin: 1px 5px;
     padding: 0 2px;
diff --git a/static/images/ico-file.png b/static/images/ico-file.png
index f44952c..7c493e7 100644
Binary files a/static/images/ico-file.png and b/static/images/ico-file.png differ
diff --git a/static/js/hotkeys.js b/static/js/hotkeys.js
index 55b4fd8..7edeec0 100644
--- a/static/js/hotkeys.js
+++ b/static/js/hotkeys.js
@@ -103,7 +103,7 @@ var hotkeys = {
                         return false;
                     }
 
-                    if (wide.curNode.iconSkin === "ico-ztree-dir ") { // 选中节点是目录
+                    if (tree.isDir()) { // 选中节点是目录
                         // 不做任何处理
                         return false;
                     }
@@ -130,7 +130,7 @@ var hotkeys = {
                         }
 
                         var preNode = wide.curNode.getPreNode();
-                        if (preNode && preNode.iconSkin === "ico-ztree-dir "
+                        if (preNode && tree.isDir()
                                 && preNode.open) {
                             // 当前节点的上一个节点是目录且打开时，获取打开节点中的最后一个节点
                             node = tree.getCurrentNodeLastNode(preNode);
@@ -153,7 +153,7 @@ var hotkeys = {
                         }
 
                         node = wide.curNode.getNextNode();
-                        if (wide.curNode.iconSkin === "ico-ztree-dir " && wide.curNode.open) {
+                        if (tree.isDir() && wide.curNode.open) {
                             // 当前节点是目录且打开时
                             node = wide.curNode.children[0];
                         }
@@ -181,7 +181,7 @@ var hotkeys = {
                         return false;
                     }
 
-                    if (wide.curNode.iconSkin !== "ico-ztree-dir " || !wide.curNode.open) {
+                    if (!tree.isDir() || !wide.curNode.open) {
                         return false;
                     }
 
@@ -196,7 +196,7 @@ var hotkeys = {
                         return false;
                     }
 
-                    if (wide.curNode.iconSkin !== "ico-ztree-dir " || wide.curNode.open) {
+                    if (!tree.isDir() || wide.curNode.open) {
                         return false;
                     }
 
diff --git a/static/js/tree.js b/static/js/tree.js
index 7ae2029..84ed316 100644
--- a/static/js/tree.js
+++ b/static/js/tree.js
@@ -73,6 +73,12 @@ var tree = {
             }
         }
     },
+    isDir: function () {
+        if (wide.curNode.iconSkin.indexOf("ico-ztree-dir") === 0) {
+            return true;
+        }
+        return false;
+    },
     newFile: function () {
         $("#dirRMenu").hide();
         $("#dialogNewFilePrompt").dialog("open");
@@ -81,7 +87,18 @@ var tree = {
         $("#dirRMenu").hide();
         $("#dialogNewDirPrompt").dialog("open");
     },
-    removeIt: function () {
+    removeIt: function (it) {
+        if (it) {
+            if ($(it).hasClass("disabled")) {
+                return false;
+            }
+        } else {
+            // 直接调用时，如果为 api 及其子目录或者 workspace 则不能进行删除
+            if (wide.curNode.iconSkin === 'ico-ztree-dir-workspace ') {
+                return false;
+            }
+        }
+
         $("#dirRMenu").hide();
         $("#fileRMenu").hide();
         $("#dialogRemoveConfirm").dialog("open");
@@ -123,15 +140,22 @@ var tree = {
                                     wide.curNode = treeNode;
                                     tree.fileTree.selectNode(treeNode);
 
-                                    if ("ico-ztree-dir " !== treeNode.iconSkin) { // 如果右击了文件
-                                        $("#fileRMenu ul").show();
+                                    if (!tree.isDir()) { // 如果右击了文件
+                                        $("#fileRMenu").show();
+
                                         fileRMenu.css({
                                             "top": event.clientY - 10 + "px",
                                             "left": event.clientX + "px",
                                             "display": "block"
                                         });
                                     } else { // 右击了目录
-                                        $("#dirRMenu ul").show();
+                                        if (wide.curNode.iconSkin === "ico-ztree-dir-workspace ") {
+                                            $("#dirRMenu .remove").addClass("disabled");
+                                        } else {
+                                            $("#dirRMenu .remove").removeClass("disabled");
+                                        }
+
+                                        $("#dirRMenu").show();
                                         dirRMenu.css({
                                             "top": event.clientY - 10 + "px",
                                             "left": event.clientX + "px",
@@ -171,7 +195,7 @@ var tree = {
             }
         }
 
-        if ("ico-ztree-dir " !== treeNode.iconSkin) { // 如果单击了文件
+        if (!tree.isDir()) { // 如果单击了文件
             var request = newWideRequest();
             request.path = treeNode.path;
 
diff --git a/static/js/wide.js b/static/js/wide.js
index 8d9cde5..c5de3d2 100644
--- a/static/js/wide.js
+++ b/static/js/wide.js
@@ -56,7 +56,7 @@ var wide = {
                         $("#dialogRemoveConfirm").dialog("close");
                         tree.fileTree.removeNode(wide.curNode);
 
-                        if ("ico-ztree-dir " !== wide.curNode.iconSkin) {
+                        if (!tree.isDir()) {
                             // 是文件的话，查看 editor 中是否被打开，如打开则移除
                             for (var i = 0, ii = editors.data.length; i < ii; i++) {
                                 if (editors.data[i].id === wide.curNode.tId) {
diff --git a/views/index.html b/views/index.html
index 6a5c47c..28f066c 100644
--- a/views/index.html
+++ b/views/index.html
@@ -133,14 +133,14 @@
                             <ul>
                                 <li onclick="tree.newFile();">{{.i18n.create_file}}</li>
                                 <li onclick="tree.newDir();">{{.i18n.create_dir}}</li>
-                                <li onclick="tree.removeIt();">{{.i18n.delete}}</li>
+                                <li class="remove" onclick="tree.removeIt(this);">{{.i18n.delete}}</li>
                             </ul>
                         </div>
 
                         <!-- 文件右键菜单 -->
                         <div id="fileRMenu" class="frame">
                             <ul>
-                                <li onclick="tree.removeIt();">{{.i18n.delete}}</li>
+                                <li onclick="tree.removeIt(this);">{{.i18n.delete}}</li>
                             </ul>
                         </div>
                     </div>