diff --git a/assets/script/game/map/MissionComp.ts b/assets/script/game/map/MissionComp.ts
index c0e76f32..d6759ab2 100644
--- a/assets/script/game/map/MissionComp.ts
+++ b/assets/script/game/map/MissionComp.ts
@@ -73,9 +73,11 @@ export class MissionComp extends CCComp {
         this.next_func=undefined
     }
     run_time(){
-        tween(this.node.getChildByName("time")).to(0.2, {scale:v3(1.5,1.5,1.5)}, {easing:"backOut"}).start()
-        tween(this.node.getChildByName("time")).to(0.2, {scale:v3(1,1,1)}, {easing:"backIn"}).start()
-        tween(this.node.getChildByName("time")).to(0.2, {scale:v3(1.5,1.5,1.5)}, {easing:"backOut"}).start()
+        tween(this.node.getChildByName("time"))
+            .to(0.2, {scale:v3(1.5,1.5,1.5)}, {easing:"backOut"})
+            .to(0.2, {scale:v3(1,1,1)}, {easing:"backIn"})
+            .to(0.2, {scale:v3(1.5,1.5,1.5)}, {easing:"backOut"})
+            .start()
         this.time_num--
         this.node.getChildByName("time").getChildByName("time").getComponent(Label).string=this.time_num.toString()
         if(this.time_num<=0){