diff --git a/resources/views/livewire/pages/auth/register.blade.php b/resources/views/livewire/pages/auth/register.blade.php
index 0a87cd9..223841b 100644
--- a/resources/views/livewire/pages/auth/register.blade.php
+++ b/resources/views/livewire/pages/auth/register.blade.php
@@ -23,6 +23,7 @@ new #[Layout('layouts.guest')] class extends Component
         $validated = $this->validate([
             'name' => ['required', 'string', 'max:255'],
             'email' => ['required', 'string', 'lowercase', 'email', 'max:255', 'unique:'.User::class],
+            'phone' => ['required', 'regex:/^09\d{8}$/', 'unique:'.User::class], // 新增 phone 欄位驗證
             'password' => ['required', 'string', 'confirmed', Rules\Password::defaults()],
         ]);
 
@@ -54,6 +55,13 @@ new #[Layout('layouts.guest')] class extends Component
             <x-input-error :messages="$errors->get('email')" class="mt-2" />
         </div>
 
+        <!-- Phone -->
+        <div class="mt-4">
+            <x-input-label for="phone" :value="__('Phone')" />
+            <x-text-input wire:model="phone" id="phone" class="block mt-1 w-full" type="text" name="phone" required autocomplete="tel" />
+            <x-input-error :messages="$errors->get('phone')" class="mt-2" />
+        </div>
+
         <!-- Password -->
         <div class="mt-4">
             <x-input-label for="password" :value="__('Password')" />
diff --git a/tests/Feature/Auth/RegistrationTest.php b/tests/Feature/Auth/RegistrationTest.php
index 16100aa..e21351f 100644
--- a/tests/Feature/Auth/RegistrationTest.php
+++ b/tests/Feature/Auth/RegistrationTest.php
@@ -24,6 +24,7 @@ class RegistrationTest extends TestCase
         $component = Volt::test('pages.auth.register')
             ->set('name', 'Test User')
             ->set('email', 'test@example.com')
+            ->set('phone', '0912345678')
             ->set('password', 'password')
             ->set('password_confirmation', 'password');