diff --git a/BE/src/game/redis/game-redis-memory.service.ts b/BE/src/game/redis/game-redis-memory.service.ts
index d8669b7..416abf4 100644
--- a/BE/src/game/redis/game-redis-memory.service.ts
+++ b/BE/src/game/redis/game-redis-memory.service.ts
@@ -1,13 +1,14 @@
 import { Injectable, Logger } from '@nestjs/common';
 import { InjectRedis } from '@nestjs-modules/ioredis';
 import Redis from 'ioredis';
-import { Cron, CronExpression } from '@nestjs/schedule';
 import { REDIS_KEY } from '../../common/constants/redis-key.constant';
+import { Cron, CronExpression } from '@nestjs/schedule';
 
 @Injectable()
 export class GameRedisMemoryService {
   private readonly logger = new Logger(GameRedisMemoryService.name);
   private readonly BATCH_SIZE = 100; // 한 번에 처리할 배치 크기
+  private readonly INACTIVE_THRESHOLD = 30 * 60 * 1000; // 30분 30 * 60 * 1000;
 
   private readonly TTL = {
     ROOM: 3 * 60 * 60,
@@ -18,10 +19,60 @@ export class GameRedisMemoryService {
 
   constructor(@InjectRedis() private readonly redis: Redis) {}
 
+  /**
+   * 비활성 방 체크 (주기적으로 실행)
+   */
+  /**
+   * 비활성 방을 체크하고 정리하는 크론 작업
+   * SCAN을 사용하여 대규모 방 목록도 안전하게 처리
+   */
+  @Cron(CronExpression.EVERY_10_MINUTES)
+  async checkInactiveRooms(): Promise<void> {
+    this.logger.verbose('비활성 방 체크 시작');
+    try {
+      const now = Date.now();
+      let cursor = '0';
+      let processedCount = 0;
+
+      do {
+        // SCAN을 사용하여 배치 단위로 처리
+        const [nextCursor, rooms] = await this.redis.sscan(
+          REDIS_KEY.ACTIVE_ROOMS,
+          cursor,
+          'COUNT',
+          this.BATCH_SIZE
+        );
+        cursor = nextCursor;
+
+        // 병렬로 방 상태 체크 및 처리
+        await Promise.all(
+          rooms.map(async (roomId) => {
+            try {
+              const lastActivity = await this.redis.hget(REDIS_KEY.ROOM(roomId), 'lastActivityAt');
+
+              if (lastActivity && now - parseInt(lastActivity) > this.INACTIVE_THRESHOLD) {
+                await this.redis.publish('room:cleanup', roomId);
+                this.logger.verbose(`비활성으로 인해 방 ${roomId} 정리 시작`);
+                processedCount++;
+              }
+            } catch (error) {
+              this.logger.error(`방 ${roomId} 처리 중 오류 발생: ${error.message}`);
+            }
+          })
+        );
+      } while (cursor !== '0');
+
+      this.logger.verbose(`비활성 방 체크 완료: ${processedCount}개 방 정리됨`);
+    } catch (error) {
+      this.logger.error(`비활성 방 체크 중 오류 발생: ${error.message}`);
+    }
+  }
+
   /**
    * TTL 관리를 위한 스케줄러
    * 배치 처리로 블로킹 최소화
    */
+
   // @Cron(CronExpression.EVERY_MINUTE)
   async manageTTL(): Promise<void> {
     try {
diff --git a/BE/src/game/redis/subscribers/room.cleanup.subscriber.ts b/BE/src/game/redis/subscribers/room.cleanup.subscriber.ts
index be905cf..5409e85 100644
--- a/BE/src/game/redis/subscribers/room.cleanup.subscriber.ts
+++ b/BE/src/game/redis/subscribers/room.cleanup.subscriber.ts
@@ -37,6 +37,15 @@ export class RoomCleanupSubscriber extends RedisSubscriber {
     try {
       const pipeline = this.redis.pipeline();
 
+      // 1. 방에 속한 플레이어 목록 가져오기, 200명미만 -> smembers 사용!
+      const players = await this.redis.smembers(REDIS_KEY.ROOM_PLAYERS(roomId));
+
+      // 2. 플레이어 데이터 삭제
+      for (const playerId of players) {
+        pipeline.del(REDIS_KEY.PLAYER(playerId)); // 플레이어 기본 데이터
+        pipeline.del(`${REDIS_KEY.PLAYER(playerId)}:Changes`); // 플레이어 Changes 데이터
+      }
+
       // 1. 방 관련 기본 데이터 삭제
       pipeline.del(REDIS_KEY.ROOM(roomId));
       pipeline.del(REDIS_KEY.ROOM_PLAYERS(roomId));
diff --git a/BE/src/game/service/game.room.service.ts b/BE/src/game/service/game.room.service.ts
index a44755a..da381e3 100644
--- a/BE/src/game/service/game.room.service.ts
+++ b/BE/src/game/service/game.room.service.ts
@@ -8,7 +8,6 @@ import { generateUniquePin } from '../../common/utils/utils';
 import SocketEvents from '../../common/constants/socket-events';
 import { UpdateRoomOptionDto } from '../dto/update-room-option.dto';
 import { UpdateRoomQuizsetDto } from '../dto/update-room-quizset.dto';
-import { Cron, CronExpression } from '@nestjs/schedule';
 import { Socket } from 'socket.io';
 import { KickRoomDto } from '../dto/kick-room.dto';
 import { TraceClass } from '../../common/interceptor/SocketEventLoggerInterceptor';
@@ -18,7 +17,6 @@ import { TraceClass } from '../../common/interceptor/SocketEventLoggerIntercepto
 export class GameRoomService {
   private readonly logger = new Logger(GameRoomService.name);
   private readonly INACTIVE_THRESHOLD = 30 * 60 * 1000; // 30분 30 * 60 * 1000;
-  // private readonly PLAYER_GRACE_PERIOD = 10; // 10초
 
   constructor(
     @InjectRedis() private readonly redis: Redis,
@@ -255,25 +253,6 @@ export class GameRoomService {
     await pipeline.exec();
   }
 
-  /**
-   * 비활성 방 체크 (주기적으로 실행)
-   */
-  @Cron(CronExpression.EVERY_MINUTE)
-  async checkInactiveRooms(): Promise<void> {
-    const now = Date.now();
-    const rooms = await this.redis.smembers(REDIS_KEY.ACTIVE_ROOMS);
-    this.logger.verbose(`비활성 방 체크시작 / 활성 방 목록: ${rooms}`);
-
-    for (const roomId of rooms) {
-      const lastActivity = await this.redis.hget(REDIS_KEY.ROOM(roomId), 'lastActivityAt');
-
-      if (lastActivity && now - parseInt(lastActivity) > this.INACTIVE_THRESHOLD) {
-        await this.redis.publish('room:cleanup', roomId);
-        this.logger.verbose(`비활성으로 인해 방 ${roomId} 정리 시작`);
-      }
-    }
-  }
-
   /**
    * 플레이어 관련 모든 데이터에 TTL 설정
    */