diff --git a/src/map/baidu-map/CanvasLayer.js b/src/map/baidu-map/CanvasLayer.js
index c24049bf..5a979a6f 100644
--- a/src/map/baidu-map/CanvasLayer.js
+++ b/src/map/baidu-map/CanvasLayer.js
@@ -73,15 +73,10 @@ if (global.BMap) {
 
     CanvasLayer.prototype._draw = function() {
         var map = this._map;
-        var size = map.getSize();
-        var center = map.getCenter();
-        if (center) {
-            var pixel = map.pointToOverlayPixel(center);
-            this.canvas.style.left = pixel.x - size.width / 2 + 'px';
-            this.canvas.style.top = pixel.y - size.height / 2 + 'px';
-            this.dispatchEvent('draw');
-            this.options.update && this.options.update.call(this);
-        }
+        this.canvas.style.left = - map.offsetX + 'px';
+        this.canvas.style.top = - map.offsetY + 'px';
+        this.dispatchEvent('draw');
+        this.options.update && this.options.update.apply(this, arguments);
     }
 
     CanvasLayer.prototype.getContainer = function() {
diff --git a/src/map/baidu-map/Layer.js b/src/map/baidu-map/Layer.js
index e453049f..9f5e8830 100644
--- a/src/map/baidu-map/Layer.js
+++ b/src/map/baidu-map/Layer.js
@@ -43,6 +43,13 @@ class Layer extends BaseLayer{
         });
 
     }
+    
+    throttle(fun, ctx, pixel, e) {
+        clearTimeout(fun.tId)
+        fun.tId = setTimeout(function(){
+            fun.call(ctx, pixel, e);
+        }, 300);
+    }
 
     clickEvent(e) {
         var pixel = e.pixel;
@@ -51,7 +58,8 @@ class Layer extends BaseLayer{
 
     mousemoveEvent(e) {
         var pixel = e.pixel;
-        super.mousemoveEvent(pixel, e);
+        this.throttle(super.mousemoveEvent, this, pixel, e);
+        // super.mousemoveEvent(pixel, e);
     }
 
     bindEvent(e) {