diff --git a/app/Http/Controllers/Admin/ParkingPatternController.php b/app/Http/Controllers/Admin/ParkingPatternController.php
index a5b5f15..2464010 100644
--- a/app/Http/Controllers/Admin/ParkingPatternController.php
+++ b/app/Http/Controllers/Admin/ParkingPatternController.php
@@ -389,7 +389,7 @@ class ParkingPatternController extends BaseController
                 null,
                 __('admin.delete_succeeded')
             );
-        } catch (ValidationException $e) {
+        } catch (ValidationException|CustomException $e) {
             throw $e;
         } catch (Exception $e) {
             return $this->responseService->systemError(
diff --git a/app/Services/ParkingPatternService.php b/app/Services/ParkingPatternService.php
index bf85577..2142c9c 100644
--- a/app/Services/ParkingPatternService.php
+++ b/app/Services/ParkingPatternService.php
@@ -2,13 +2,12 @@
 
 namespace App\Services;
 
+use App\Exceptions\CustomException;
 use App\Models\ParkingPattern as ParkingPatternModel;
 use App\Models\ParkingPatternSpace;
 use App\Models\ParkingSpace;
 use App\Models\ParkingSpaceType;
 use Exception;
-use Illuminate\Database\Eloquent\Builder;
-use Illuminate\Database\Eloquent\Model;
 use Illuminate\Support\Facades\DB;
 
 class ParkingPatternService extends BaseService
@@ -239,7 +238,9 @@ class ParkingPatternService extends BaseService
             DB::beginTransaction();
 
             $model = ParkingPatternModel::query()->findOrFail($id);
-
+            if ($model['is_default'] == '1') {
+                throw new CustomException(__service('parking_pattern.default_del'));
+            }
             $this->logService->logDeleted($model, 'parking_pattern.delete');
 
             $model->delete();
diff --git a/resources/lang/en/service.php b/resources/lang/en/service.php
index 244acab..9e2a216 100644
--- a/resources/lang/en/service.php
+++ b/resources/lang/en/service.php
@@ -85,7 +85,8 @@ return [
         'name_exists'      => 'Activity mode already exists',
         'space_exists'     => 'The current mode parking number already exists',
         'space_not_exists' => 'The current parking space number does not exist',
-        'type_not_exists'  => 'The current parking space type does not exist'
+        'type_not_exists'  => 'The current parking space type does not exist',
+        'default_del'      => 'The default mode cannot be deleted.'
     ],
     'event_calendar'      => [
         'planned'        => 'Planned',
diff --git a/resources/lang/zh-CN/service.php b/resources/lang/zh-CN/service.php
index 44d4a75..426f741 100644
--- a/resources/lang/zh-CN/service.php
+++ b/resources/lang/zh-CN/service.php
@@ -85,7 +85,8 @@ return [
         'name_exists'      => '活动模式已存在',
         'space_exists'     => '当前模式车位号已存在',
         'space_not_exists' => '当前模式车位号不存在',
-        'type_not_exists'  => '当前模式车位类型不存在'
+        'type_not_exists'  => '当前模式车位类型不存在',
+        'default_del'      => '默认模式不可删除'
     ],
     'event_calendar'      => [
         'planned'        => '计划中',
diff --git a/resources/lang/zh-TW/service.php b/resources/lang/zh-TW/service.php
index bb05cd3..151495d 100644
--- a/resources/lang/zh-TW/service.php
+++ b/resources/lang/zh-TW/service.php
@@ -85,7 +85,8 @@ return [
         'name_exists'      => '活動模式已存在',
         'space_exists'     => '當前模式車位號已存在',
         'space_not_exists' => '當前模式車位號不存在',
-        'type_not_exists'  => '當前模式車位類型不存在'
+        'type_not_exists'  => '當前模式車位類型不存在',
+        'default_del'      => '默认模式無法刪除'
     ],
     'event_calendar'      => [
         'planned'        => '計畫中',