diff --git a/README.md b/README.md
index f97bec8..5d450f9 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ viewer.imageryLayers.add(new Cesium.ImageryLayer( new AmapImageryProvider(option
 
 > 百度地图
 
-```js
+```js 
 var options = {
   style: 'normal', // style: img、vec、normal、dark
   crs: 'WGS84' // 使用84坐标系，默认为：BD09
@@ -72,11 +72,12 @@ viewer.imageryLayers.add(new Cesium.ImageryLayer( new GeoVisImageryProvider(opti
 
 ## GoogleImageryProvider
 
-> 谷歌地图(已被墙)
+> 谷歌地图
 
 ```js
 var options = {
-  style: 'img' //style: img、elec、ter
+  style: 'elec',//style: img、elec、ter,cva,img_cva
+  crs: 'WGS84' // 使用84坐标系，默认为：GCJ02, img除外
 }
 viewer.imageryLayers.add(new Cesium.ImageryLayer( new GoogleImageryProvider(options)))
 ```
diff --git a/package.json b/package.json
index 79e3d92..264b305 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@dvgis/cesium-map",
-  "version": "3.0.1",
+  "version": "3.1.0",
   "repository": "https://github.com/dvgis/cesium-map.git",
   "homepage": "https://www.dvgis.cn",
   "author": "Caven Chen <cavencj@gmail.com>",
diff --git a/src/imagery/amap/AmapImageryProvider.js b/src/imagery/amap/AmapImageryProvider.js
index 9cefdf1..8b50f8b 100644
--- a/src/imagery/amap/AmapImageryProvider.js
+++ b/src/imagery/amap/AmapImageryProvider.js
@@ -3,7 +3,7 @@
  * @Date: 2020-01-15 20:31:28
  */
 
-import AmapMercatorTilingScheme from './AmapMercatorTilingScheme'
+import GCJ02TilingScheme from '../tiling-scheme/GCJ02TilingScheme'
 import { UrlTemplateImageryProvider } from '@cesium/engine'
 
 const TILE_URL = {
@@ -24,7 +24,7 @@ class AmapImageryProvider extends UrlTemplateImageryProvider {
       options['subdomains'] = ['01', '02', '03', '04']
     }
     if (options.crs === 'WGS84') {
-      options['tilingScheme'] = new AmapMercatorTilingScheme()
+      options['tilingScheme'] = new GCJ02TilingScheme()
     }
     super(options)
   }
diff --git a/src/imagery/baidu/BaiduImageryProvider.js b/src/imagery/baidu/BaiduImageryProvider.js
index 95ff400..2158356 100644
--- a/src/imagery/baidu/BaiduImageryProvider.js
+++ b/src/imagery/baidu/BaiduImageryProvider.js
@@ -6,12 +6,11 @@
 import {
   Cartesian2,
   WebMercatorTilingScheme,
-  DeveloperError,
   ImageryProvider,
   UrlTemplateImageryProvider,
 } from '@cesium/engine'
 
-import BaiduMercatorTilingScheme from './BaiduMercatorTilingScheme'
+import BD09TilingScheme from '../tiling-scheme/BD09TilingScheme'
 
 const TILE_URL = {
   img: '//shangetu{s}.map.bdimg.com/it/u=x={x};y={y};z={z};v=009;type=sate&fm=46',
@@ -35,7 +34,7 @@ class BaiduImageryProvider extends UrlTemplateImageryProvider {
       for (let i = 0; i < 19; i++) {
         resolutions[i] = 256 * Math.pow(2, 18 - i)
       }
-      options['tilingScheme'] = new BaiduMercatorTilingScheme({
+      options['tilingScheme'] = new BD09TilingScheme({
         resolutions,
         rectangleSouthwestInMeters: new Cartesian2(-20037726.37, -12474104.17),
         rectangleNortheastInMeters: new Cartesian2(20037726.37, 12474104.17),
diff --git a/src/imagery/google/GoogleImageryProvider.js b/src/imagery/google/GoogleImageryProvider.js
index ebceae7..a8b75b2 100644
--- a/src/imagery/google/GoogleImageryProvider.js
+++ b/src/imagery/google/GoogleImageryProvider.js
@@ -4,11 +4,14 @@
  */
 
 import { UrlTemplateImageryProvider } from '@cesium/engine'
+import GCJ02TilingScheme from '../tiling-scheme/GCJ02TilingScheme'
 
 const TILE_URL = {
-  img: '//mt{s}.google.cn/vt/lyrs=s&hl=zh-CN&x={x}&y={y}&z={z}&s=Gali',
-  elec: '//mt{s}.google.cn/vt/lyrs=m@207000000&hl=zh-CN&gl=CN&src=app&x={x}&y={y}&z={z}&s=Galile',
-  ter: '//mt{s}.google.cn/vt/lyrs=t@131,r@227000000&hl=zh-CN&gl=cn&x={x}&y={y}&z={z}&s=Galile',
+  img: 'https://gac-geo.googlecnapps.cn/maps/vt?lyrs=s&x={x}&y={y}&z={z}',
+  elec: 'https://gac-geo.googlecnapps.cn/maps/vt?lyrs=m&x={x}&y={y}&z={z}',
+  cva: 'https://gac-geo.googlecnapps.cn/maps/vt?lyrs=h&x={x}&y={y}&z={z}',
+  ter: 'https://gac-geo.googlecnapps.cn/maps/vt?lyrs=t@131,r&x={x}&y={y}&z={z}',
+  img_cva: 'https://gac-geo.googlecnapps.cn/maps/vt?lyrs=y&x={x}&y={y}&z={z}',
 }
 
 class GoogleImageryProvider extends UrlTemplateImageryProvider {
@@ -19,7 +22,9 @@ class GoogleImageryProvider extends UrlTemplateImageryProvider {
         options.protocol || '',
         TILE_URL[options.style] || TILE_URL['elec'],
       ].join('')
-    options['subdomains'] = options.subdomains || ['1', '2', '3']
+    if (options.crs === 'WGS84') {
+      options['tilingScheme'] = new GCJ02TilingScheme()
+    }
     super(options)
   }
 }
diff --git a/src/imagery/baidu/BaiduMercatorProjection.js b/src/imagery/projection/BD09Projection.js
similarity index 99%
rename from src/imagery/baidu/BaiduMercatorProjection.js
rename to src/imagery/projection/BD09Projection.js
index 120b7e6..19ff3ca 100644
--- a/src/imagery/baidu/BaiduMercatorProjection.js
+++ b/src/imagery/projection/BD09Projection.js
@@ -72,7 +72,7 @@ const LL2MC = [
   ],
 ]
 
-class BaiduMercatorProjection {
+class BD09Projection {
   constructor() {
     this.isWgs84 = false
   }
@@ -404,4 +404,4 @@ class BaiduMercatorProjection {
   }
 }
 
-export default BaiduMercatorProjection
+export default BD09Projection
diff --git a/src/imagery/baidu/BaiduMercatorTilingScheme.js b/src/imagery/tiling-scheme/BD09TilingScheme.js
similarity index 91%
rename from src/imagery/baidu/BaiduMercatorTilingScheme.js
rename to src/imagery/tiling-scheme/BD09TilingScheme.js
index 15886db..079f36c 100644
--- a/src/imagery/baidu/BaiduMercatorTilingScheme.js
+++ b/src/imagery/tiling-scheme/BD09TilingScheme.js
@@ -12,13 +12,13 @@ import {
   defined,
 } from '@cesium/engine'
 
-import BaiduMercatorProjection from './BaiduMercatorProjection'
+import BD09Projection from '../projection/BD09Projection.js'
 import CoordTransform from '../../transform/CoordTransform'
 
-class BaiduMercatorTilingScheme extends WebMercatorTilingScheme {
+class BD09TilingScheme extends WebMercatorTilingScheme {
   constructor(options) {
     super(options)
-    let projection = new BaiduMercatorProjection()
+    let projection = new BD09Projection()
     this._projection.project = function (cartographic, result) {
       result = result || {}
       result = CoordTransform.WGS84ToGCJ02(
@@ -58,7 +58,7 @@ class BaiduMercatorTilingScheme extends WebMercatorTilingScheme {
    * @param y
    * @param level
    * @param result
-   * @returns {module:cesium.Rectangle|*}
+   * @returns {Rectangle|*}
    */
   tileXYToNativeRectangle(x, y, level, result) {
     const tileWidth = this.resolutions[level]
@@ -107,4 +107,4 @@ class BaiduMercatorTilingScheme extends WebMercatorTilingScheme {
   }
 }
 
-export default BaiduMercatorTilingScheme
+export default BD09TilingScheme
diff --git a/src/imagery/amap/AmapMercatorTilingScheme.js b/src/imagery/tiling-scheme/GCJ02TilingScheme.js
similarity index 91%
rename from src/imagery/amap/AmapMercatorTilingScheme.js
rename to src/imagery/tiling-scheme/GCJ02TilingScheme.js
index d62188c..05bc018 100644
--- a/src/imagery/amap/AmapMercatorTilingScheme.js
+++ b/src/imagery/tiling-scheme/GCJ02TilingScheme.js
@@ -13,7 +13,7 @@ import {
 
 import CoordTransform from '../../transform/CoordTransform'
 
-class AmapMercatorTilingScheme extends WebMercatorTilingScheme {
+class GCJ02TilingScheme extends WebMercatorTilingScheme {
   constructor(options) {
     super(options)
     let projection = new WebMercatorProjection()
@@ -44,4 +44,4 @@ class AmapMercatorTilingScheme extends WebMercatorTilingScheme {
   }
 }
 
-export default AmapMercatorTilingScheme
+export default GCJ02TilingScheme