diff --git a/apps/server/src/rooms/rooms.module.ts b/apps/server/src/rooms/rooms.module.ts
index 7c18d45..b5959c6 100644
--- a/apps/server/src/rooms/rooms.module.ts
+++ b/apps/server/src/rooms/rooms.module.ts
@@ -3,13 +3,15 @@ import { TypeOrmModule } from '@nestjs/typeorm';
 import { Room } from '../entities/room.entity';
 import { Occupancy } from '../entities/occupancy.entity';
 import { RoomExpense } from '../entities/room-expense.entity';
+import { Bed } from '../entities/bed.entity';
+import { Locker } from '../entities/locker.entity';
 import { RoomsService } from './rooms.service';
 import { RoomsController } from './rooms.controller';
 import { OperationLogsModule } from '../operation-logs/operation-logs.module';
 import { CommonModule } from '../common/common.module';
 
 @Module({
-  imports: [TypeOrmModule.forFeature([Room, Occupancy, RoomExpense]), OperationLogsModule, CommonModule],
+  imports: [TypeOrmModule.forFeature([Room, Occupancy, RoomExpense, Bed, Locker]), OperationLogsModule, CommonModule],
   controllers: [RoomsController],
   providers: [RoomsService],
   exports: [RoomsService],
diff --git a/apps/server/src/rooms/rooms.service.ts b/apps/server/src/rooms/rooms.service.ts
index 7aa40ca..89cce35 100644
--- a/apps/server/src/rooms/rooms.service.ts
+++ b/apps/server/src/rooms/rooms.service.ts
@@ -5,7 +5,11 @@ import { CampusScope } from '../common/campus-scope';
 import { Room } from '../entities/room.entity';
 import { Occupancy } from '../entities/occupancy.entity';
 import { RoomExpense } from '../entities/room-expense.entity';
+import { Bed } from '../entities/bed.entity';
+import { Locker } from '../entities/locker.entity';
 import { CreateRoomDto, UpdateRoomDto } from './dto/room.dto';
+import { CreateBedDto, UpdateBedDto, BatchCreateBedDto } from './dto/bed.dto';
+import { CreateLockerDto, UpdateLockerDto, BatchCreateLockerDto } from './dto/locker.dto';
 
 @Injectable()
 export class RoomsService {
@@ -13,7 +17,8 @@ export class RoomsService {
     @InjectRepository(Room) private repo: Repository<Room>,
     @InjectRepository(Occupancy) private occRepo: Repository<Occupancy>,
     @InjectRepository(RoomExpense) private roomExpRepo: Repository<RoomExpense>,
-    private readonly scope: CampusScope,
+    @InjectRepository(Bed) private bedRepo: Repository<Bed>,
+    @InjectRepository(Locker) private lockerRepo: Repository<Locker>,
   ) {}
 
   /**
@@ -320,4 +325,122 @@ export class RoomsService {
       skipped,
     };
   }
+
+  // ── 床位管理 ──
+
+  async getRoomBeds(roomId: number): Promise<Bed[]> {
+    const room = await this.repo.findOne({ where: { id: roomId } });
+    if (!room) throw new NotFoundException('宿舍不存在');
+    return this.bedRepo.find({ where: { roomId }, order: { bedNumber: 'ASC' } });
+  }
+
+  async getRoomAvailableBeds(roomId: number): Promise<Bed[]> {
+    const room = await this.repo.findOne({ where: { id: roomId } });
+    if (!room) throw new NotFoundException('宿舍不存在');
+    return this.bedRepo.find({ where: { roomId, status: 'available' }, order: { bedNumber: 'ASC' } });
+  }
+
+  async createBed(roomId: number, dto: CreateBedDto): Promise<Bed> {
+    const room = await this.repo.findOne({ where: { id: roomId } });
+    if (!room) throw new NotFoundException('宿舍不存在');
+    if (room.status === 'archived') throw new BadRequestException('已归档宿舍不能添加床位');
+    const existing = await this.bedRepo.findOne({ where: { roomId, bedNumber: dto.bedNumber } });
+    if (existing) throw new BadRequestException('该床位编号已存在');
+    const bed = this.bedRepo.create({ ...dto, roomId });
+    return this.bedRepo.save(bed);
+  }
+
+  async updateBed(roomId: number, id: number, dto: UpdateBedDto): Promise<Bed> {
+    const bed = await this.bedRepo.findOne({ where: { id, roomId } });
+    if (!bed) throw new NotFoundException('床位不存在');
+    // 不允许将 occupied 的床位改为 maintenance
+    if (dto.status === 'maintenance' && bed.status === 'occupied') {
+      throw new BadRequestException('该床位有人入住，请先退宿');
+    }
+    // 编号唯一性检查
+    if (dto.bedNumber && dto.bedNumber !== bed.bedNumber) {
+      const dup = await this.bedRepo.findOne({ where: { roomId, bedNumber: dto.bedNumber } });
+      if (dup) throw new BadRequestException('该床位编号已存在');
+    }
+    Object.assign(bed, dto);
+    return this.bedRepo.save(bed);
+  }
+
+  async deleteBed(roomId: number, id: number): Promise<void> {
+    const bed = await this.bedRepo.findOne({ where: { id, roomId } });
+    if (!bed) throw new NotFoundException('床位不存在');
+    if (bed.status === 'occupied') throw new BadRequestException('该床位有人入住，无法删除');
+    await this.bedRepo.remove(bed);
+  }
+
+  async batchCreateBeds(roomId: number, dto: BatchCreateBedDto): Promise<Bed[]> {
+    const room = await this.repo.findOne({ where: { id: roomId } });
+    if (!room) throw new NotFoundException('宿舍不存在');
+    if (room.status === 'archived') throw new BadRequestException('已归档宿舍不能添加床位');
+    const existing = await this.bedRepo.count({ where: { roomId } });
+    const start = existing + 1;
+    const beds: Bed[] = [];
+    for (let i = 0; i < dto.count; i++) {
+      beds.push(this.bedRepo.create({ roomId, bedNumber: `${start + i}号床` }));
+    }
+    return this.bedRepo.save(beds);
+  }
+
+  // ── 柜子管理 ──
+
+  async getRoomLockers(roomId: number): Promise<Locker[]> {
+    const room = await this.repo.findOne({ where: { id: roomId } });
+    if (!room) throw new NotFoundException('宿舍不存在');
+    return this.lockerRepo.find({ where: { roomId }, order: { lockerNumber: 'ASC' } });
+  }
+
+  async getRoomAvailableLockers(roomId: number): Promise<Locker[]> {
+    const room = await this.repo.findOne({ where: { id: roomId } });
+    if (!room) throw new NotFoundException('宿舍不存在');
+    return this.lockerRepo.find({ where: { roomId, status: 'available' }, order: { lockerNumber: 'ASC' } });
+  }
+
+  async createLocker(roomId: number, dto: CreateLockerDto): Promise<Locker> {
+    const room = await this.repo.findOne({ where: { id: roomId } });
+    if (!room) throw new NotFoundException('宿舍不存在');
+    if (room.status === 'archived') throw new BadRequestException('已归档宿舍不能添加柜子');
+    const existing = await this.lockerRepo.findOne({ where: { roomId, lockerNumber: dto.lockerNumber } });
+    if (existing) throw new BadRequestException('该柜子编号已存在');
+    const locker = this.lockerRepo.create({ ...dto, roomId });
+    return this.lockerRepo.save(locker);
+  }
+
+  async updateLocker(roomId: number, id: number, dto: UpdateLockerDto): Promise<Locker> {
+    const locker = await this.lockerRepo.findOne({ where: { id, roomId } });
+    if (!locker) throw new NotFoundException('柜子不存在');
+    if (dto.status === 'maintenance' && locker.status === 'occupied') {
+      throw new BadRequestException('该柜子有人占用，请先释放');
+    }
+    if (dto.lockerNumber && dto.lockerNumber !== locker.lockerNumber) {
+      const dup = await this.lockerRepo.findOne({ where: { roomId, lockerNumber: dto.lockerNumber } });
+      if (dup) throw new BadRequestException('该柜子编号已存在');
+    }
+    Object.assign(locker, dto);
+    return this.lockerRepo.save(locker);
+  }
+
+  async deleteLocker(roomId: number, id: number): Promise<void> {
+    const locker = await this.lockerRepo.findOne({ where: { id, roomId } });
+    if (!locker) throw new NotFoundException('柜子不存在');
+    if (locker.status === 'occupied') throw new BadRequestException('该柜子有人占用，无法删除');
+    await this.lockerRepo.remove(locker);
+  }
+
+  async batchCreateLockers(roomId: number, dto: BatchCreateLockerDto): Promise<Locker[]> {
+    const room = await this.repo.findOne({ where: { id: roomId } });
+    if (!room) throw new NotFoundException('宿舍不存在');
+    if (room.status === 'archived') throw new BadRequestException('已归档宿舍不能添加柜子');
+    const existing = await this.lockerRepo.count({ where: { roomId } });
+    const start = existing + 1;
+    const lockers: Locker[] = [];
+    for (let i = 0; i < dto.count; i++) {
+      lockers.push(this.lockerRepo.create({ roomId, lockerNumber: `${start + i}号柜` }));
+    }
+    return this.lockerRepo.save(lockers);
+  }
 }