diff --git a/database/migrations/2025_05_06_055307_create_rooms_table.php b/database/migrations/2025_05_06_055307_create_rooms_table.php
index d4468c7..1ace277 100644
--- a/database/migrations/2025_05_06_055307_create_rooms_table.php
+++ b/database/migrations/2025_05_06_055307_create_rooms_table.php
@@ -24,6 +24,8 @@ return new class extends Migration
             $table->dateTime('started_at')->nullable()->comment('開始時間');         // 
             $table->dateTime('ended_at')->nullable()->comment('結束時間'); // 
             $table->timestamps();
+            // 👇 複合唯一鍵（分店 + 樓層 + 類型 + 包廂名稱）
+            $table->unique(['branch_id', 'floor', 'type', 'name'], 'unique_room_name_per_branch_floor_type');
         });
     }