diff --git a/TurntableDemo/README.md b/TurntableDemo/README.md
index d942874..09b0019 100644
--- a/TurntableDemo/README.md
+++ b/TurntableDemo/README.md
@@ -1,2 +1,2 @@
-# 转盘demo
-一个简单实现的转盘demo
+# hello-world
+Hello world new project template.
diff --git a/TurntableDemo/assets/Script/TurntableMgr.js b/TurntableDemo/assets/Script/TurntableMgr.js
index 04af44e..28f4172 100644
--- a/TurntableDemo/assets/Script/TurntableMgr.js
+++ b/TurntableDemo/assets/Script/TurntableMgr.js
@@ -3,10 +3,10 @@ cc.Class({
 
     properties: {
         nodeBoxBg: cc.Node,
-        total: 6,//几项
-        section: 0,//一项分多少
-        resultIdx: 0,
-        delayTime: 0,
+        total: 6,//几项奖品
+        section: 0,//一项奖品切多少份
+        resultIdx: 0,//显示的结果id
+        delayTime: 0,//延期多少才开始显示结果
     },
 
     initProperties() {
@@ -49,9 +49,27 @@ cc.Class({
         this.node.runAction(cc.sequence(cc.delayTime(1 + this.delayTime), cc.callFunc(() => {
             console.log('已经选择了');
             this.choiceIdx = (this.total - this.resultIdx) * this.section;
+            this.choiceIdx = this.randomChoiceIdx(this.choiceIdx);
         })));
     },
 
+    onFinish() {
+        console.log('结束了');
+    },
+
+    randomChoiceIdx(idx) {
+        console.log('randomChoiceIdx');
+        let randomIdx = Math.floor(Math.random() * (this.section - 1));
+        if (randomIdx == 0) {//不能是上边
+            randomIdx++;
+        } else if (randomIdx == this.section) {////不能是下边
+            randomIdx--;
+        }
+        let temp = Math.floor(this.section / 2);
+        randomIdx = temp - randomIdx;
+        return idx + randomIdx;
+    },
+
     /**
      * 
      * @param {*} rotation 
@@ -73,7 +91,9 @@ cc.Class({
                 this.showResult = true;
             }
             console.log('rotation=', rotation, this.rotationSpeed, idx);
-
+            if (this.rotationSpeed <= 0) {
+                this.onFinish();
+            }
         }
     },