diff --git a/app/Enums/RoomStatus.php b/app/Enums/RoomStatus.php
new file mode 100644
index 0000000..b9cd372
--- /dev/null
+++ b/app/Enums/RoomStatus.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Enums;
+
+use App\Enums\Traits\HasLabels;
+
+enum RoomStatus: string {
+    use HasLabels;
+
+    case Active = 'active';
+    case Closed = 'closed';
+    case Error = 'error';
+    case Maintenance = 'maintenance';
+
+    // 返回對應的顯示文字
+    public function labels(): string
+    {
+        return match($this) {
+            self::Active => __('enums.room.status.Active'),
+            self::Closed => __('enums.room.status.Closed'),
+            self::Error => __('enums.room.status.Error'),
+            self::Maintenance => __('enums.room.status.Maintenance'),
+        };
+    }
+}
diff --git a/app/Models/.DS_Store b/app/Models/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/app/Models/.DS_Store differ
diff --git a/app/Models/Branch.php b/app/Models/Branch.php
new file mode 100644
index 0000000..48de8f2
--- /dev/null
+++ b/app/Models/Branch.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Branch extends Model
+{
+    /** @use HasFactory<\Database\Factories\ArtistFactory> */
+    use HasFactory;
+       
+    protected $fillable = [
+        'name', 
+        'external_ip',
+    ];
+
+    public function rooms() {
+        return $this->hasMany(Room::class);
+    }
+    public function songs(){
+        return $this->belongsToMany(Song::class)
+                    ->withPivot('counts')
+                    ->withTimestamps();
+    }
+}
diff --git a/app/Models/Room.php b/app/Models/Room.php
new file mode 100644
index 0000000..ad8c5df
--- /dev/null
+++ b/app/Models/Room.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Room extends Model
+{
+    /** @use HasFactory<\Database\Factories\ArtistFactory> */
+    use HasFactory;
+
+    protected $casts = [
+        'started_at' => 'datetime',
+        'ended_at' => 'datetime',
+    ];
+
+    public function branch() {
+        return $this->belongsTo(Branch::class);
+    }
+
+    public function statusLogs() {
+        return $this->hasMany(RoomStatusLog::class);
+    }
+}
diff --git a/app/Models/RoomStatusLog.php b/app/Models/RoomStatusLog.php
new file mode 100644
index 0000000..d36c84a
--- /dev/null
+++ b/app/Models/RoomStatusLog.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class RoomStatusLog extends Model
+{
+    /** @use HasFactory<\Database\Factories\ArtistFactory> */
+    use HasFactory;
+
+    public $timestamps = false;
+
+    protected $fillable = 
+    [
+        'room_id', 
+        'user_id', 
+        'status', 
+        'message', 
+        'logged_at'
+    ];
+
+    protected $casts = [
+        'logged_at' => 'datetime',
+    ];
+
+    public function room() {
+        return $this->belongsTo(Room::class);
+    }
+}
diff --git a/app/Models/Song.php b/app/Models/Song.php
index 043aa7d..f40efd5 100644
--- a/app/Models/Song.php
+++ b/app/Models/Song.php
@@ -60,7 +60,11 @@ class Song extends Model
     public function categories(){
         return $this->belongsToMany(SongCategory::class);
     }
-
+    public function branches(){
+        return $this->belongsToMany(Branch::class)
+                    ->withPivot('counts')
+                    ->withTimestamps();
+    }
     protected static function booted()
     {
         // 無論是 creating 或 updating，都執行這段共用的邏輯
diff --git a/app/Observers/RoomObserver.php b/app/Observers/RoomObserver.php
new file mode 100644
index 0000000..01a9775
--- /dev/null
+++ b/app/Observers/RoomObserver.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Observers;
+
+use App\Models\Room;
+
+class RoomObserver
+{
+    /**
+     * Handle the Room "created" event.
+     */
+    public function created(Room $room): void
+    {
+        //
+    }
+
+    /**
+     * Handle the Room "updated" event.
+     */
+    public function updated(Room $room): void
+    {
+        // 檢查是否有變更狀態
+        if ($room->wasChanged('status')) {
+            RoomStatusLog::create([
+                'room_id' => $room->id,
+                'user_id' => Auth::id(), // 若是 console 或系統自動操作可能為 null
+                'status' => $room->status,
+                'message' => '狀態自動變更紀錄',
+                'logged_at' => now(),
+            ]);
+        }
+    }
+
+    /**
+     * Handle the Room "deleted" event.
+     */
+    public function deleted(Room $room): void
+    {
+        //
+    }
+
+    /**
+     * Handle the Room "restored" event.
+     */
+    public function restored(Room $room): void
+    {
+        //
+    }
+
+    /**
+     * Handle the Room "force deleted" event.
+     */
+    public function forceDeleted(Room $room): void
+    {
+        //
+    }
+}
diff --git a/database/.DS_Store b/database/.DS_Store
new file mode 100644
index 0000000..b1ea27f
Binary files /dev/null and b/database/.DS_Store differ
diff --git a/database/migrations/.DS_Store b/database/migrations/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/database/migrations/.DS_Store differ
diff --git a/database/migrations/2025_05_06_055303_create_branches_table.php b/database/migrations/2025_05_06_055303_create_branches_table.php
new file mode 100644
index 0000000..19e9ebf
--- /dev/null
+++ b/database/migrations/2025_05_06_055303_create_branches_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('branches', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->ipAddress('external_ip'); // 對外 IP
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('branches');
+    }
+};
diff --git a/database/migrations/2025_05_06_055307_create_rooms_table.php b/database/migrations/2025_05_06_055307_create_rooms_table.php
new file mode 100644
index 0000000..a71a614
--- /dev/null
+++ b/database/migrations/2025_05_06_055307_create_rooms_table.php
@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('rooms', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('branch_id')->constrained()->onDelete('cascade'); // 關聯分店
+            $table->string('name');                 // 包廂名稱
+            $table->string('internal_ip');          // 內部 IP
+            $table->unsignedSmallInteger('port');   // 通訊 Port
+            $table->enum('status', ['active', 'closed', 'error', 'maintenance']); // 狀態：啟用中 / 已結束
+            $table->dateTime('started_at');         // 開始時間
+            $table->dateTime('ended_at')->nullable(); // 結束時間
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('rooms');
+    }
+};
diff --git a/database/migrations/2025_05_06_055312_create_room_status_logs_table.php b/database/migrations/2025_05_06_055312_create_room_status_logs_table.php
new file mode 100644
index 0000000..8c27e98
--- /dev/null
+++ b/database/migrations/2025_05_06_055312_create_room_status_logs_table.php
@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('room_status_logs', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('room_id')->constrained()->onDelete('cascade');
+            $table->foreignId('user_id')->nullable()->constrained()->onDelete('set null'); // 操作者，可為 null（系統）
+            $table->enum('status', ['active', 'closed', 'error', 'maintenance']);
+            $table->text('message')->nullable(); // 可填異常原因或操作說明
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('room_status_logs');
+    }
+};
diff --git a/database/migrations/2025_05_06_055313_create_branch_song_table.php b/database/migrations/2025_05_06_055313_create_branch_song_table.php
new file mode 100644
index 0000000..8a57888
--- /dev/null
+++ b/database/migrations/2025_05_06_055313_create_branch_song_table.php
@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('branch_song', function (Blueprint $table) {
+            $table->unsignedBigInteger('song_id');
+            $table->unsignedBigInteger('branch_id');
+            $table->integer('counts')->default(0)->comment('點播次數');
+            $table->foreign('song_id')->references('id')->on('songs')->restrictOnDelete()->restrictOnUpdate();
+            $table->foreign('branch_id')->references('id')->on('branches')->restrictOnDelete()->restrictOnUpdate();
+            $table->primary(['song_id', 'branch_id']);
+
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('branch_song');
+    }
+};