diff --git a/src/chart/bar/BarSeries.js b/src/chart/bar/BarSeries.js
index 2b398f4412f6750ee0e688300ed9c145aad64673..f653347e995fbb0aea8776f5dfe5a439efa63cb7 100644
--- a/src/chart/bar/BarSeries.js
+++ b/src/chart/bar/BarSeries.js
@@ -28,6 +28,8 @@ define(function(require) {
 
             // 最小高度改为0
             barMinHeight: 0,
+
+            // barMaxWidth: null,
             // 默认自适应
             // barWidth: null,
             // 柱间距离，默认为柱形宽度的30%，可设固定值
@@ -52,8 +54,6 @@ define(function(require) {
                     // color: '各异',
                     // 柱条边线
                     barBorderColor: '#fff',
-                    // 柱条边线圆角，单位px，默认为0
-                    barBorderRadius: 0,
                     // 柱条边线线宽，单位px，默认为1
                     barBorderWidth: 0
                 },
@@ -61,8 +61,6 @@ define(function(require) {
                     // color: '各异',
                     // 柱条边线
                     barBorderColor: '#fff',
-                    // 柱条边线圆角，单位px，默认为0
-                    barBorderRadius: 0,
                     // 柱条边线线宽，单位px，默认为1
                     barBorderWidth: 0
                 }
diff --git a/src/chart/radar/backwardCompat.js b/src/chart/radar/backwardCompat.js
index cd65f4d73f812b36d6b89069d7c5a3b16e52b704..f0014bb404264d5011fc4471f2ca84f59822026e 100644
--- a/src/chart/radar/backwardCompat.js
+++ b/src/chart/radar/backwardCompat.js
@@ -149,7 +149,7 @@ define(function (require) {
                             seriesOpt.name = dataOpt.name;
                             for (var i = 1; i < dataList.length; i++) {
                                 var dataOpt = dataList[i];
-                                var newSeriesOpt = zrUtil.clone(seriesOpt, true);
+                                var newSeriesOpt = zrUtil.clone(seriesOpt);
                                 option.series.push(zrUtil.extend(newSeriesOpt, {
                                     name: dataOpt.name,
                                     data: dataOpt.value,
diff --git a/src/component/helper/SelectController.js b/src/component/helper/SelectController.js
index 74417ee97f0c4272dd1fa867b099bd2b6e22a4af..a6db78639ee3fd9756ccb69a95bb4e3e7e53f136 100644
--- a/src/component/helper/SelectController.js
+++ b/src/component/helper/SelectController.js
@@ -50,7 +50,7 @@ define(function (require) {
          * @type {Object}
          * @readOnly
          */
-        this.opt = zrUtil.clone(opt, true);
+        this.opt = zrUtil.clone(opt);
 
         /**
          * @type {module:zrender/container/Group}
@@ -131,7 +131,7 @@ define(function (require) {
             // TODO
             // Only support one interval yet.
             if (ranges) {
-                renderCover.call(this, zrUtil.clone(ranges, true));
+                renderCover.call(this, zrUtil.clone(ranges));
             }
         },
 
@@ -218,7 +218,7 @@ define(function (require) {
 
             renderCover.call(this, ranges);
 
-            this.trigger('selected', zrUtil.clone(ranges, true));
+            this.trigger('selected', zrUtil.clone(ranges));
         }
     }
 
diff --git a/src/component/timeline/SliderTimelineView.js b/src/component/timeline/SliderTimelineView.js
index c76095191aec227ead92e6dbadaa21319b1f0902..8ecaed2c9c4d3dc3de42aceb47469a9ed898b0d7 100644
--- a/src/component/timeline/SliderTimelineView.js
+++ b/src/component/timeline/SliderTimelineView.js
@@ -635,7 +635,7 @@ define(function (require) {
     function makeIcon(timelineModel, objPath, rect, opts) {
         var icon = graphic.makePath(
             timelineModel.get(objPath).replace(/^path:\/\//, ''),
-            zrUtil.clone(opts || {}, true),
+            zrUtil.clone(opts || {}),
             new BoundingRect(rect[0], rect[1], rect[2], rect[3]),
             'center'
         );
diff --git a/src/component/timeline/TimelineModel.js b/src/component/timeline/TimelineModel.js
index b160033773bc0956ab787ff5952736785b8978b1..9cc8ab167c855eff1d6bfd63863866fda0002e80 100644
--- a/src/component/timeline/TimelineModel.js
+++ b/src/component/timeline/TimelineModel.js
@@ -151,7 +151,7 @@ define(function(require) {
                     var newItem;
 
                     if (zrUtil.isObject(item)) {
-                        newItem = zrUtil.clone(item, true);
+                        newItem = zrUtil.clone(item);
                         newItem.value = index;
                     }
                     else {
diff --git a/src/component/tooltip/TooltipView.js b/src/component/tooltip/TooltipView.js
index 05a72980ee4cb37995f9e2347da12637a52f5dfd..483c4eedef7c7ec4e313a85d561a4071ab0a1772 100644
--- a/src/component/tooltip/TooltipView.js
+++ b/src/component/tooltip/TooltipView.js
@@ -790,14 +790,14 @@ define(function (require) {
             if (lastHover.payloadBatch && !contentNotChange) {
                 this._api.dispatchAction({
                     type: 'downplay',
-                    batch: zrUtil.clone(lastHover.payloadBatch, true)
+                    batch: zrUtil.clone(lastHover.payloadBatch)
                 });
             }
             // Dispatch highlight action
             if (!contentNotChange) {
                 this._api.dispatchAction({
                     type: 'highlight',
-                    batch: zrUtil.clone(payloadBatch, true)
+                    batch: zrUtil.clone(payloadBatch)
                 });
                 lastHover.payloadBatch = payloadBatch;
             }
diff --git a/src/component/visualMap/PiecewiseModel.js b/src/component/visualMap/PiecewiseModel.js
index c8d13c96b84089b7b78b2dc1696a37cb46740cf6..5e265039f2731284003da23fe1937a8ae0fee6bd 100644
--- a/src/component/visualMap/PiecewiseModel.js
+++ b/src/component/visualMap/PiecewiseModel.js
@@ -56,7 +56,7 @@ define(function(require) {
 
             this.resetVisual(function (mappingOption, state) {
                 mappingOption.mappingMethod = mappingMethod;
-                mappingOption.categories = categories && zrUtil.clone(categories, true);
+                mappingOption.categories = categories && zrUtil.clone(categories);
 
                 var intervals = mappingOption.intervals = [];
                 var specifiedVisuals = mappingOption.specifiedVisuals = [];
diff --git a/src/component/visualMap/PiecewiseView.js b/src/component/visualMap/PiecewiseView.js
index 97ce62b6f3bde5adba0b5e32913a23dcee4efa30..235d46cbac9274a9cbc864167b612530aed2ed7e 100644
--- a/src/component/visualMap/PiecewiseView.js
+++ b/src/component/visualMap/PiecewiseView.js
@@ -150,7 +150,7 @@ define(function(require) {
          */
         _onItemClick: function (index) {
             var visualMapModel = this.visualMapModel;
-            var selected = zrUtil.clone(visualMapModel.get('selected'), true);
+            var selected = zrUtil.clone(visualMapModel.get('selected'));
 
             if (visualMapModel.get('selectedMode') === 'single') {
                 zrUtil.each(selected, function (item, index) {
diff --git a/src/component/visualMap/VisualMapModel.js b/src/component/visualMap/VisualMapModel.js
index c97e3b9461406a4668b7b6dd9d6419fcc69bc54f..606ab13d096b7740c240c5ff14399d59a9a637d2 100644
--- a/src/component/visualMap/VisualMapModel.js
+++ b/src/component/visualMap/VisualMapModel.js
@@ -389,12 +389,12 @@ define(function(require) {
                     // Consistent symbol and symbolSize if not specified.
                     if (!visuals.symbol) {
                         visuals.symbol = symbolExists
-                            && zrUtil.clone(symbolExists, true)
+                            && zrUtil.clone(symbolExists)
                             || (isCategory ? 'roundRect' : ['roundRect']);
                     }
                     if (!visuals.symbolSize) {
                         visuals.symbolSize = symbolSizeExists
-                            && zrUtil.clone(symbolSizeExists, true)
+                            && zrUtil.clone(symbolSizeExists)
                             || (isCategory ? itemSize[0] : [itemSize[0], itemSize[0]]);
                     }
 
diff --git a/src/coord/parallel/AxisModel.js b/src/coord/parallel/AxisModel.js
index 694c1eadf5f7c874fb4e172fe82b63d2298fa293..fe76c4e57df476949a695074b1293b511fb6a53e 100644
--- a/src/coord/parallel/AxisModel.js
+++ b/src/coord/parallel/AxisModel.js
@@ -47,7 +47,7 @@ define(function(require) {
          * @public
          */
         setActiveIntervals: function (intervals) {
-            var activeIntervals = this.activeIntervals = zrUtil.clone(intervals, true);
+            var activeIntervals = this.activeIntervals = zrUtil.clone(intervals);
 
             // Normalize
             if (activeIntervals) {
diff --git a/src/coord/parallel/Parallel.js b/src/coord/parallel/Parallel.js
index 55963e9ddd2582a04b9f5c9ad69c1166baf8f108..3bb6356a199738777302867d103e91a37e334e23 100644
--- a/src/coord/parallel/Parallel.js
+++ b/src/coord/parallel/Parallel.js
@@ -280,7 +280,7 @@ define(function(require) {
          * Get axis layout.
          */
         getAxisLayout: function (dim) {
-            return zrUtil.clone(this._axesLayout[dim], true);
+            return zrUtil.clone(this._axesLayout[dim]);
         }
 
     };
diff --git a/src/echarts.js b/src/echarts.js
index 2d14efb57f18bd6227c80aa9210ebcbe3cf03df9..62e0781c45c401d8e6a41bd85872a5645158e61d 100644
--- a/src/echarts.js
+++ b/src/echarts.js
@@ -83,7 +83,7 @@ define(function (require) {
          * @type {Object}
          * @private
          */
-        this._theme = zrUtil.clone(theme, true);
+        this._theme = zrUtil.clone(theme);
 
         /**
          * @type {Array.<module:echarts/view/Chart>}
diff --git a/src/model/Global.js b/src/model/Global.js
index c638c579d4c4a1a8ab24e7347f756aab183f4b1b..89c67a08e7036e5ee0edad6000baa1328b0f0d13 100644
--- a/src/model/Global.js
+++ b/src/model/Global.js
@@ -110,7 +110,7 @@ define(function (require) {
 
                 if (!ComponentModel.hasClass(mainType)) {
                     option[mainType] = option[mainType] == null
-                        ? zrUtil.clone(componentOption, true)
+                        ? zrUtil.clone(componentOption)
                         : zrUtil.merge(option[mainType], componentOption, true);
                 }
                 else {
diff --git a/src/model/Model.js b/src/model/Model.js
index d1618b511bcaa494815f21d7f7a386a16c34a794..80a09562a67ac2fad990833cbc7877e9a813f0f8 100644
--- a/src/model/Model.js
+++ b/src/model/Model.js
@@ -123,7 +123,7 @@ define(function (require) {
         // Pending
         clone: function () {
             var Ctor = this.constructor;
-            return new Ctor(zrUtil.clone(this.option, true));
+            return new Ctor(zrUtil.clone(this.option));
         },
 
         setReadOnly: function (properties) {
diff --git a/src/visual/VisualMapping.js b/src/visual/VisualMapping.js
index 80ac839c10479f6ba4119eefeb1efebe69b2c624..612ad0fb30f5f57aba09d39405356de253cdfb07 100644
--- a/src/visual/VisualMapping.js
+++ b/src/visual/VisualMapping.js
@@ -56,7 +56,7 @@ define(function (require) {
          * @readOnly
          * @type {Object}
          */
-        var thisOption = this.option = zrUtil.clone(option, true);
+        var thisOption = this.option = zrUtil.clone(option);
 
         /**
          * @private
diff --git a/src/visual/visualDefault.js b/src/visual/visualDefault.js
index ba07314c84061d3ff15d0051cdb470026b1e94f7..1ccef6ce9c1d8a3d655709f450c5aaebe072ffdb 100644
--- a/src/visual/visualDefault.js
+++ b/src/visual/visualDefault.js
@@ -12,8 +12,7 @@ define(function (require) {
          */
         get: function (visualType, key, isCategory) {
             var value = zrUtil.clone(
-                (defaultOption[visualType] || {})[key],
-                true
+                (defaultOption[visualType] || {})[key]
             );
 
             return isCategory