diff --git a/tutorials-2.6-1/src/main/java/cn/bugstack/design/DrawControl.java b/tutorials-2.6-1/src/main/java/cn/bugstack/design/DrawControl.java
index 479c60b..e6376d6 100755
--- a/tutorials-2.6-1/src/main/java/cn/bugstack/design/DrawControl.java
+++ b/tutorials-2.6-1/src/main/java/cn/bugstack/design/DrawControl.java
@@ -1,7 +1,5 @@
 package cn.bugstack.design;
 
-import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 
 /**
@@ -16,8 +14,14 @@ public class DrawControl {
 
     private IDraw draw;
 
-    public List<BetUser> doDraw(IDraw draw, List<BetUser> betUserList, int count) {
+    public List<BetUser> doDraw(List<BetUser> betUserList, int count) {
         return draw.prize(betUserList, count);
     }
 
+    public DrawControl() {
+    }
+
+    public DrawControl(IDraw draw) {
+        this.draw = draw;
+    }
 }
diff --git a/tutorials-2.6-1/src/test/java/cn/bugstack/design/test/ApiTest.java b/tutorials-2.6-1/src/test/java/cn/bugstack/design/test/ApiTest.java
index 1a1a9ef..b23ab06 100644
--- a/tutorials-2.6-1/src/test/java/cn/bugstack/design/test/ApiTest.java
+++ b/tutorials-2.6-1/src/test/java/cn/bugstack/design/test/ApiTest.java
@@ -25,11 +25,12 @@ public void test_DrawControl() {
         betUserList.add(new BetUser("笨笨", 89));
         betUserList.add(new BetUser("丑蛋", 10));
 
-        DrawControl drawControl = new DrawControl();
-        List<BetUser> prizeRandomUserList = drawControl.doDraw(new DrawRandom(), betUserList, 3);
+        DrawControl drawControl = new DrawControl(new DrawRandom());
+        List<BetUser> prizeRandomUserList = drawControl.doDraw(betUserList, 3);
         logger.info("随机抽奖，中奖用户名单：{}", JSON.toJSON(prizeRandomUserList));
 
-        List<BetUser> prizeWeightUserList = drawControl.doDraw(new DrawWeightRank(), betUserList, 3);
+        drawControl = new DrawControl(new DrawWeightRank());
+        List<BetUser> prizeWeightUserList = drawControl.doDraw(betUserList, 3);
         logger.info("权重抽奖，中奖用户名单：{}", JSON.toJSON(prizeWeightUserList));
     }