diff --git a/echarts/echarts.d.ts b/echarts/echarts.d.ts
index 09f04ca6ef..f460a9eaca 100644
--- a/echarts/echarts.d.ts
+++ b/echarts/echarts.d.ts
@@ -7,28 +7,46 @@ declare namespace ECharts {
     function init(dom:HTMLDivElement|HTMLCanvasElement, theme?:Object|string, opts?:{
         devicePixelRatio?: number
         renderer?: string
-    }): ECharts;
-    function connect(group:string|Array<string>);
-    function disConnect(group:string);
-    function dispose(target: ECharts|HTMLDivElement|HTMLCanvasElement);
-    function getInstanceByDom(target: HTMLDivElement|HTMLCanvasElement);
-    function registerMap(mapName: string, geoJson: Object, specialAreas?: Object);
-    function registerTheme(themeName: string, theme: Object);
+    }):ECharts;
+
+    function connect(group:string|Array<string>):void;
+
+    function disConnect(group:string):void;
+
+    function dispose(target:ECharts|HTMLDivElement|HTMLCanvasElement):void;
+
+    function getInstanceByDom(target:HTMLDivElement|HTMLCanvasElement):void;
+
+    function registerMap(mapName:string, geoJson:Object, specialAreas?:Object):void;
+
+    function registerTheme(themeName:string, theme:Object):void;
 
     class ECharts {
         group:string;
-        setOption(option: EChartOption, notMerge?: boolean, notRefreshImmediately?: boolean)
-        getWidth(): number
-        getHeight(): number
-        getDom(): HTMLCanvasElement|HTMLDivElement
-        getOption(): Object
-        resize()
-        dispatchAction(payload: Object)
-        on(eventName: string, handler: Function, context?: Object)
-        off(eventName: string, handler?: Function)
-        showLoading(type?: string, opts?: Object)
-        hideLoading()
-        getDataURL(opts: {
+
+        setOption(option:EChartOption, notMerge?:boolean, notRefreshImmediately?:boolean):void
+
+        getWidth():number
+
+        getHeight():number
+
+        getDom():HTMLCanvasElement|HTMLDivElement
+
+        getOption():Object
+
+        resize():void
+
+        dispatchAction(payload:Object):void
+
+        on(eventName:string, handler:Function, context?:Object):void
+
+        off(eventName:string, handler?:Function):void
+
+        showLoading(type?:string, opts?:Object):void
+
+        hideLoading():void
+
+        getDataURL(opts:{
             // 导出的格式，可选 png, jpeg
             type?: string,
             // 导出的图片分辨率比例，默认为 1。
@@ -36,17 +54,21 @@ declare namespace ECharts {
             // 导出的图片背景色，默认使用 option 里的 backgroundColor
             backgroundColor?: string
         }):string
-        getConnectedDataURL(opts: {
+
+        getConnectedDataURL(opts:{
             // 导出的格式，可选 png, jpeg
             type: string,
             // 导出的图片分辨率比例，默认为 1。
             pixelRatio: number,
             // 导出的图片背景色，默认使用 option 里的 backgroundColor
             backgroundColor: string
-        }): string
-        clear()
-        isDisposed(): boolean
-        dispose()
+        }):string
+
+        clear():void
+
+        isDisposed():boolean
+
+        dispose():void
     }
 
     interface EChartOption {