diff --git a/assets/script/game/hero/Hero.ts b/assets/script/game/hero/Hero.ts
index 69152d8b..45d2d439 100644
--- a/assets/script/game/hero/Hero.ts
+++ b/assets/script/game/hero/Hero.ts
@@ -1,4 +1,4 @@
-import { instantiate, Node, Prefab, Vec3 ,v3,resources,SpriteFrame,Sprite,SpriteAtlas, BoxCollider2D, tween, Tween} from "cc";
+import { instantiate, Node, Prefab, Vec3 ,v3,resources,SpriteFrame,Sprite,SpriteAtlas, BoxCollider2D, RigidBody2D, tween, Tween} from "cc";
 import { oops } from "../../../../extensions/oops-plugin-framework/assets/core/Oops";
 import { ecs } from "../../../../extensions/oops-plugin-framework/assets/libs/ecs/ECS";
 import { smc } from "../common/SingletonModuleComp";
@@ -163,7 +163,10 @@ export class Hero extends ecs.Entity {
         const collider = node.getComponent(BoxCollider2D);
         if (collider) {
             collider.enabled = false;
-            collider.apply();
+        }
+        const body = node.getComponent(RigidBody2D);
+        if (body) {
+            body.enabled = false;
         }
         const currentPos = node.getPosition();
         const targetPos = v3(birthPos.x, birthPos.y, 0);
diff --git a/assets/script/game/map/MissionHeroComp.ts b/assets/script/game/map/MissionHeroComp.ts
index 1e2b59eb..8a29fc51 100644
--- a/assets/script/game/map/MissionHeroComp.ts
+++ b/assets/script/game/map/MissionHeroComp.ts
@@ -21,6 +21,8 @@ export class MissionHeroCompComp extends CCComp {
     Friend_is_dead:boolean=false
     current_hero_uuid:number=0
     current_hero_num:number=-1
+    merge_need_count:number=3
+    merge_max_lv:number=3
     is_merging:boolean=false
     heros:any=[]
     onLoad(){
@@ -62,9 +64,11 @@ export class MissionHeroCompComp extends CCComp {
         const uuid = Number(args?.uuid ?? 1001);
         const hero_lv = Math.max(1, Number(args?.hero_lv ?? 1));
         this.addHero(uuid, hero_lv);
+        if (!this.canMergeLevel(hero_lv)) return;
+        const needCount = this.getMergeNeedCount();
         const aliveHeroes = this.getAliveHeroes();
-        const mergeHeroes = this.pickMergeHeroes(aliveHeroes, uuid, hero_lv, 3);
-        if (mergeHeroes.length === 3) {
+        const mergeHeroes = this.pickMergeHeroes(aliveHeroes, uuid, hero_lv, needCount);
+        if (mergeHeroes.length === needCount) {
             this.is_merging = true;
             try {
                 const mergedLv = await this.mergeGroupHeroes(mergeHeroes, uuid, hero_lv);
@@ -135,6 +139,14 @@ export class MissionHeroCompComp extends CCComp {
         return count;
     }
 
+    private getMergeNeedCount(): number {
+        return this.merge_need_count === 2 ? 2 : 3;
+    }
+
+    private canMergeLevel(hero_lv: number): boolean {
+        return hero_lv < Math.max(1, this.merge_max_lv);
+    }
+
     private mergeDestroyAtBirth(mergeHeroes: Hero[], spawnPos: Vec3): Promise<void> {
         return new Promise((resolve) => {
             let doneCount = 0;
@@ -194,21 +206,25 @@ export class MissionHeroCompComp extends CCComp {
         const spawnPos:Vec3 = v3(landingPos.x, landingPos.y + MissionHeroCompComp.HERO_DROP_HEIGHT, 0);
         await this.mergeDestroyAtBirth(mergeHeroes, spawnPos);
         await this.playMergeBoomFx(spawnPos);
-        return this.addMergedHero(uuid, hero_lv + 1, sumAp, sumHpMax);
+        return this.addMergedHero(uuid, Math.min(this.merge_max_lv, hero_lv + 1), sumAp, sumHpMax);
     }
 
     private async tryChainMerge(uuid: number, startLv: number) {
         let checkLv = Math.max(1, startLv);
+        const needCount = this.getMergeNeedCount();
         let guard = 0;
         while (guard < 20) {
             guard += 1;
-            const aliveHeroes = this.getAliveHeroes();
-            const sameCount = this.countMergeHeroes(aliveHeroes, uuid, checkLv);
-            if (sameCount < 3) {
+            if (!this.canMergeLevel(checkLv)) {
                 break;
             }
-            const mergeHeroes = this.pickMergeHeroes(aliveHeroes, uuid, checkLv, 3);
-            if (mergeHeroes.length < 3) {
+            const aliveHeroes = this.getAliveHeroes();
+            const sameCount = this.countMergeHeroes(aliveHeroes, uuid, checkLv);
+            if (sameCount < needCount) {
+                break;
+            }
+            const mergeHeroes = this.pickMergeHeroes(aliveHeroes, uuid, checkLv, needCount);
+            if (mergeHeroes.length < needCount) {
                 break;
             }
             checkLv = await this.mergeGroupHeroes(mergeHeroes, uuid, checkLv);