diff --git a/file/files.go b/file/files.go
index 86c13f6..7108632 100644
--- a/file/files.go
+++ b/file/files.go
@@ -66,7 +66,7 @@ func initAPINode() {
 // GetFiles handles request of constructing user workspace file tree.
 //
 // The Go API source code package also as a child node,
-// so that users can easily view the Go API source code in filre tree.
+// so that users can easily view the Go API source code in file tree.
 func GetFiles(w http.ResponseWriter, r *http.Request) {
 	data := map[string]interface{}{"succ": true}
 	defer util.RetJSON(w, r, data)
@@ -103,6 +103,25 @@ func GetFiles(w http.ResponseWriter, r *http.Request) {
 	data["root"] = root
 }
 
+// RefreshDirectory handles request of refresh a directory of file tree.
+func RefreshDirectory(w http.ResponseWriter, r *http.Request) {
+	r.ParseForm()
+	path := r.FormValue("path")
+
+	node := FileNode{Name: "root", Path: path, IconSkin: "ico-ztree-dir ", Type: "d", FileNodes: []*FileNode{}}
+
+	walk(path, &node, true, true)
+
+	w.Header().Set("Content-Type", "application/json")
+	data, err := json.Marshal(node.FileNodes)
+	if err != nil {
+		glog.Error(err)
+		return
+	}
+
+	w.Write(data)
+}
+
 // GetFile handles request of opening file by editor.
 func GetFile(w http.ResponseWriter, r *http.Request) {
 	data := map[string]interface{}{"succ": true}
diff --git a/i18n/en_US.json b/i18n/en_US.json
index 251545a..7c7c1fe 100644
--- a/i18n/en_US.json
+++ b/i18n/en_US.json
@@ -134,5 +134,6 @@
     "locale": "Locale",
     "apply": "Apply",
     "clearOutput": "Clear Output",
-    "export": "Export"
+    "export": "Export",
+    "refresh": "Refresh"
 }
\ No newline at end of file
diff --git a/i18n/ja_JP.json b/i18n/ja_JP.json
index 338c342..4cf7a1a 100644
--- a/i18n/ja_JP.json
+++ b/i18n/ja_JP.json
@@ -134,5 +134,6 @@
     "locale": "ロケール",
     "apply": "適用する",
     "clearOutput": "空の出力",
-    "export": "輸出"
+    "export": "輸出",
+    "refresh": "リフレッシュ"
 }
diff --git a/i18n/zh_CN.json b/i18n/zh_CN.json
index 2b02ea6..3cc1159 100644
--- a/i18n/zh_CN.json
+++ b/i18n/zh_CN.json
@@ -134,5 +134,6 @@
     "locale": "语言环境",
     "apply": "应用",
     "clearOutput": "清空输出",
-    "export": "导出"
+    "export": "导出",
+    "refresh": "刷新"
 }
\ No newline at end of file
diff --git a/i18n/zh_TW.json b/i18n/zh_TW.json
index a4519fc..860ed08 100644
--- a/i18n/zh_TW.json
+++ b/i18n/zh_TW.json
@@ -134,5 +134,6 @@
     "locale": "語言環境",
     "apply": "應用",
     "clearOutput": "清空輸出",
-    "export": "導出"
+    "export": "導出",
+    "refresh": "刷新"
 }
\ No newline at end of file
diff --git a/main.go b/main.go
index d2ba49e..74fc57e 100644
--- a/main.go
+++ b/main.go
@@ -273,6 +273,7 @@ func main() {
 
 	// file tree
 	http.HandleFunc("/files", handlerWrapper(file.GetFiles))
+	http.HandleFunc("/file/refresh", handlerWrapper(file.RefreshDirectory))
 	http.HandleFunc("/file", handlerWrapper(file.GetFile))
 	http.HandleFunc("/file/save", handlerWrapper(file.SaveFile))
 	http.HandleFunc("/file/new", handlerWrapper(file.NewFile))
diff --git a/static/js/tree.js b/static/js/tree.js
index 1bba33a..3f32b63 100644
--- a/static/js/tree.js
+++ b/static/js/tree.js
@@ -179,6 +179,18 @@ var tree = {
         $("#dirRMenu").hide();
         $("#fileRMenu").hide();
     },
+    refresh: function (it) {
+        if (it) {
+            if ($(it).hasClass("disabled")) {
+                return false;
+            }
+        }
+
+        tree.fileTree.reAsyncChildNodes(wide.curNode, "refresh");
+
+        $("#dirRMenu").hide();
+        $("#fileRMenu").hide();
+    },
     init: function () {
         $("#file").click(function () {
             $(this).focus();
@@ -205,6 +217,11 @@ var tree = {
                             showTitle: true,
                             selectedMulti: false
                         },
+                        async: {
+                            enable: true,
+                            url: "/file/refresh",
+                            autoParam: ["path"]
+                        },
                         callback: {
                             onDblClick: function (event, treeId, treeNode) {
                                 if (treeNode) {
diff --git a/views/index.html b/views/index.html
index 0a0c82b..a96c7b4 100644
--- a/views/index.html
+++ b/views/index.html
@@ -139,6 +139,7 @@
                                 <li class="remove" onclick="tree.removeIt(this);">{{.i18n.delete}}</li>
                                 <li class="rename" onclick="tree.rename(this);">{{.i18n.rename}}</li>
                                 <li class="hr"></li>
+                                <li class="refresh" onclick="tree.refresh(this);">{{.i18n.refresh}}</li>
                                 <li class="export" onclick="tree.export(this);">{{.i18n.export}}</li>
                             </ul>
                         </div>