diff --git a/app/Http/Controllers/RoomControlController.php b/app/Http/Controllers/RoomControlController.php
index d59e037..1af64c6 100644
--- a/app/Http/Controllers/RoomControlController.php
+++ b/app/Http/Controllers/RoomControlController.php
@@ -70,7 +70,7 @@ class RoomControlController extends Controller
      */
     public function receiveRegister(ReceiveRoomRegisterRequest $request): JsonResponse 
     {
-        $data = $request->only(['branch_id', 'room_name', 'room_ip', 'email']); // 不記錄密碼
+        $data = $request->only(['branch', 'room_name', 'room_ip', 'email']); // 不記錄密碼
         Log::info('Token Request Payload:', $data);
 
         // 1. 驗證帳密（登入用）
@@ -183,7 +183,7 @@ class RoomControlController extends Controller
             $roomType = strtolower($matches[1]); // 'PC' → 'pc'
             $roomName = $matches[2];             // '101'
         }
-        $room = Room::where('branch_id', $validated['branch_id'])
+        $room = Room::where('branch', $validated['branch_id'])
             ->where('name', $roomName)
             ->where('type', $roomType)
             ->first();
diff --git a/app/Http/Requests/ReceiveRoomRegisterRequest.php b/app/Http/Requests/ReceiveRoomRegisterRequest.php
index d092061..a9af873 100644
--- a/app/Http/Requests/ReceiveRoomRegisterRequest.php
+++ b/app/Http/Requests/ReceiveRoomRegisterRequest.php
@@ -7,8 +7,8 @@ use Illuminate\Foundation\Http\FormRequest;
 /**
  * @OA\Schema(
  *     schema="ReceiveRoomRegisterRequest",
- *     required={"branch_id", "room_name", "email" ,"password"},
- *     @OA\Property(property="branch_id", type="integer", example="1"),
+ *     required={"branch", "room_name", "email" ,"password"},
+ *     @OA\Property(property="branch", type="string", example="1"),
  *     @OA\Property(property="room_name", type="string", example="PC101"),
  *     @OA\Property(property="room_ip", type="string", example="192.168.1.1"),
  *     @OA\Property(property="email", type="string", example="XX@gmail.com"),
@@ -25,7 +25,7 @@ class ReceiveRoomRegisterRequest extends ApiRequest
     public function rules(): array
     {
         return [
-            'branch_id' => 'required|integer|exists:branches,id',
+            'branch' => 'required|string',
             'room_name' => 'required|string',
             'room_ip' => 'required|string',
             'email' => 'required|email',
diff --git a/app/Http/Requests/ReceiveRoomStatusDataRequest.php b/app/Http/Requests/ReceiveRoomStatusDataRequest.php
index f392b8d..a369955 100644
--- a/app/Http/Requests/ReceiveRoomStatusDataRequest.php
+++ b/app/Http/Requests/ReceiveRoomStatusDataRequest.php
@@ -7,8 +7,8 @@ use Illuminate\Foundation\Http\FormRequest;
 /**
  * @OA\Schema(
  *     schema="ReceiveRoomStatusDataRequest",
- *     required={"branch_id","hostname", "ip", "status"},
- *     @OA\Property(property="branch_id", type="integer", example="1"),
+ *     required={"branch","hostname", "ip", "status"},
+ *     @OA\Property(property="branch", type="string", example="1"),
  *     @OA\Property(property="hostname", type="string", example="PC101"),
  *     @OA\Property(property="ip", type="string", example="192.168.XX.XX"),
  *     @OA\Property(property="cpu", type="numeric", example="0.00"),
@@ -26,7 +26,7 @@ class ReceiveRoomStatusDataRequest extends ApiRequest
     public function rules(): array
     {
         return [
-            'branch_id' =>'required|integer|exists:branches,id',
+            'branch' =>'required|string',
             'hostname' => 'required|string',
             'ip' => 'required|string',
             'cpu' => 'nullable|numeric',
diff --git a/app/Models/MachineStatus.php b/app/Models/MachineStatus.php
index fd9f19b..0784c26 100644
--- a/app/Models/MachineStatus.php
+++ b/app/Models/MachineStatus.php
@@ -8,7 +8,7 @@ use Illuminate\Database\Eloquent\Model;
  * @OA\Schema(
  *     schema="MachineStatus",
  *     type="object",
- *     @OA\Property(property="branch_name", type="string", example="測試"),
+ *     @OA\Property(property="branch", type="string", example="測試"),
  *     @OA\Property(property="hostname", type="string", example="PC101"),
  *     @OA\Property(property="ip", type="string", example="192.168.XX.XX"),
  *     @OA\Property(property="cpu", type="numeric", example="0.00"),
@@ -20,7 +20,7 @@ use Illuminate\Database\Eloquent\Model;
 class MachineStatus extends Model
 {
     protected $fillable = [
-        'branch_name',
+        'branch',
         'hostname',
         'ip',
         'cpu',
diff --git a/database/migrations/2025_05_21_170205_create_machine_statuses_table.php b/database/migrations/2025_05_21_170205_create_machine_statuses_table.php
index 8833ab7..e134114 100644
--- a/database/migrations/2025_05_21_170205_create_machine_statuses_table.php
+++ b/database/migrations/2025_05_21_170205_create_machine_statuses_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
     {
         Schema::create('machine_statuses', function (Blueprint $table) {
             $table->id();
-            $table->string('branch_name');
+            $table->string('branch');
             $table->string('hostname');
             $table->string('ip')->nullable();
             $table->decimal('cpu', 5, 2)->nullable();