diff --git a/src/chart/pie/labelLayout.js b/src/chart/pie/labelLayout.js
index e0b69b8f49..324467363b 100644
--- a/src/chart/pie/labelLayout.js
+++ b/src/chart/pie/labelLayout.js
@@ -26,7 +26,6 @@ function adjustSingleSide(list, cx, cy, r, dir, viewWidth, viewHeight) {
         return a.y - b.y;
     });
 
-    // 压
     function shiftDown(start, end, delta, dir) {
         for (var j = start; j < end; j++) {
             list[j].y += delta;
@@ -42,7 +41,6 @@ function adjustSingleSide(list, cx, cy, r, dir, viewWidth, viewHeight) {
         shiftUp(end - 1, delta / 2);
     }
 
-    // 弹
     function shiftUp(end, delta) {
         for (var j = end; j >= 0; j--) {
             list[j].y -= delta;
@@ -56,18 +54,14 @@ function adjustSingleSide(list, cx, cy, r, dir, viewWidth, viewHeight) {
 
     function changeX(list, isDownList, cx, cy, r, dir) {
         var lastDeltaX = dir > 0
-            ? isDownList                // 右侧
-                ? Number.MAX_VALUE      // 下
-                : 0                     // 上
-            : isDownList                // 左侧
-                ? Number.MAX_VALUE      // 下
-                : 0;                    // 上
+            ? isDownList                // right-side
+                ? Number.MAX_VALUE      // down
+                : 0                     // up
+            : isDownList                // left-side
+                ? Number.MAX_VALUE      // down
+                : 0;                    // up
 
         for (var i = 0, l = list.length; i < l; i++) {
-            // Not change x for center label
-            if (list[i].position === 'center') {
-                continue;
-            }
             var deltaY = Math.abs(list[i].y - cy);
             var length = list[i].len;
             var length2 = list[i].len2;
@@ -78,11 +72,11 @@ function adjustSingleSide(list, cx, cy, r, dir, viewWidth, viewHeight) {
                     )
                 : Math.abs(list[i].x - cx);
             if (isDownList && deltaX >= lastDeltaX) {
-                // 右下，左下
+                // right-down, left-down
                 deltaX = lastDeltaX - 10;
             }
             if (!isDownList && deltaX <= lastDeltaX) {
-                // 右上，左上
+                // right-up, left-up
                 deltaX = lastDeltaX + 10;
             }
 
@@ -122,6 +116,9 @@ function avoidOverlap(labelLayoutList, cx, cy, r, viewWidth, viewHeight) {
     var leftList = [];
     var rightList = [];
     for (var i = 0; i < labelLayoutList.length; i++) {
+        if (isPositionCenter(labelLayoutList[i])) {
+            continue;
+        }
         if (labelLayoutList[i].x < cx) {
             leftList.push(labelLayoutList[i]);
         }
@@ -134,6 +131,9 @@ function avoidOverlap(labelLayoutList, cx, cy, r, viewWidth, viewHeight) {
     adjustSingleSide(leftList, cx, cy, r, -1, viewWidth, viewHeight);
 
     for (var i = 0; i < labelLayoutList.length; i++) {
+        if (isPositionCenter(labelLayoutList[i])) {
+            continue;
+        }
         var linePoints = labelLayoutList[i].linePoints;
         if (linePoints) {
             var dist = linePoints[1][0] - linePoints[2][0];
@@ -149,6 +149,11 @@ function avoidOverlap(labelLayoutList, cx, cy, r, viewWidth, viewHeight) {
     }
 }
 
+function isPositionCenter(layout) {
+    // Not change x for center label
+    return layout.position === 'center';
+}
+
 export default function (seriesModel, r, viewWidth, viewHeight) {
     var data = seriesModel.getData();
     var labelLayoutList = [];
diff --git a/test/tmp-base.html b/test/tmp-base.html
index 3f3693c87d..fb3a3ba75e 100644
--- a/test/tmp-base.html
+++ b/test/tmp-base.html
@@ -44,8 +44,6 @@
 
         <script>
 
-            var chart;
-            var myChart;
             var option;
 
             require([
@@ -55,7 +53,7 @@
                 // $.getJSON('./data/nutrients.json', function (data) {
                 // });
 
-                chart = myChart = testHelper.create(echarts, 'main0', {
+                var chart = testHelper.create(echarts, 'main0', {
                     option: option
                 });
             });