diff --git a/app/Admin/Controllers/v3/CouponController.php b/app/Admin/Controllers/v3/CouponController.php
index ffb2ee8..267c7a3 100644
--- a/app/Admin/Controllers/v3/CouponController.php
+++ b/app/Admin/Controllers/v3/CouponController.php
@@ -281,7 +281,7 @@ class CouponController extends AdminController
 
             $form->saving(function (Form $form){
                 $tags = $form->input('tags');
-                $activityAvailable = $form->input('activity_available');
+
                 if( $form->discount_type == 2 && ($form->discounts <= 0 || $form->discounts >= 10)){
                     return $form->error('优惠金额请输入1~10之间的数字');
                 }
@@ -296,17 +296,7 @@ class CouponController extends AdminController
                     }
                 };
                 $form->tags = json_encode($tagsArr);
-                $availableArr = [];
-                if(!empty($activityAvailable)){
-                    foreach($activityAvailable as $ka => $available){
-                        if(empty($available)){
-                            unset($activityAvailable[$ka]);
-                            continue;
-                        }
-                        $availableArr[] = $available;
-                    }
-                };
-                $form->activity_available = json_encode($availableArr);
+
                 $form->remark = empty($form->input('remark')) ? '' : $form->input('remark');
             });
             
diff --git a/app/Models/v3/Coupon.php b/app/Models/v3/Coupon.php
index db5e89c..ad0582b 100644
--- a/app/Models/v3/Coupon.php
+++ b/app/Models/v3/Coupon.php
@@ -48,7 +48,7 @@ class Coupon extends Model
         'market_ids'=>'array',
         'category_ids'=>'array',
         // 'tags'=>'json',
-        // 'activity_available'=>'array'
+        'activity_available'=>'array'
     ];
 
     public function getStatusTextAttribute()