diff --git a/models/discount_customer_bind.json b/models/discount_customer_bind.json
index 8b34ce8..5a15a00 100644
--- a/models/discount_customer_bind.json
+++ b/models/discount_customer_bind.json
@@ -54,7 +54,6 @@
             "name": "created_at",
             "title": "绑定时间",
             "type": "timestamp",
-            "default": "CURRENT_TIMESTAMP",
             "nullable": "no"
         }
     ],
diff --git a/models/discount_marketing.json b/models/discount_marketing.json
index 115203a..8da00f9 100644
--- a/models/discount_marketing.json
+++ b/models/discount_marketing.json
@@ -56,14 +56,12 @@
             "name": "created_at",
             "title": "创建时间",
             "type": "timestamp",
-            "default": "CURRENT_TIMESTAMP",
             "nullable": "no"
         },
         {
             "name": "updated_at",
             "title": "更新时间",
             "type": "timestamp",
-            "default": "CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP",
             "nullable": "no"
         }
     ],
diff --git a/models/discount_promo_code.json b/models/discount_promo_code.json
index d5a33b0..37270f4 100644
--- a/models/discount_promo_code.json
+++ b/models/discount_promo_code.json
@@ -54,7 +54,6 @@
             "name": "created_at",
             "title": "生成时间",
             "type": "timestamp",
-            "default": "CURRENT_TIMESTAMP",
             "nullable": "no"
         }
     ],