diff --git a/application/api/model/Sign.php b/application/api/model/Sign.php
index 97fff24..7fe3c65 100644
--- a/application/api/model/Sign.php
+++ b/application/api/model/Sign.php
@@ -595,7 +595,8 @@ class Sign extends Model
             return true;
         }
         $give_sign_ratio = get_system_config_value('give_sign_ratio');
-        $earnings = $gift_price * $give_sign_ratio / 100;
+        $earning = $gift_price * $give_sign_ratio / 100;
+        $earnings = coin_earning($earning,100);
         $data = [
             'user_id' => $sign_info['parent_user_id'],
             'sign_user_id' => $user_id,