diff --git a/types/db.go b/types/db.go
index b550511..e520546 100644
--- a/types/db.go
+++ b/types/db.go
@@ -28,9 +28,9 @@ type (
 	Std_IICUDS struct {
 		ID        uint           `gorm:"column:id;primarykey;"  json:"id"`
 		Identity  string         `gorm:"column:identity;type:varchar(36);uniqueIndex;"  json:"identity"` // 唯一标识，24位NanoID,36位为ULID
-		CreatedAt time.Time      `gorm:"column:created_at;" json:"created_at"`
-		UpdatedAt time.Time      `gorm:"column:updated_at;" json:"updated_at"`
-		DeletedAt gorm.DeletedAt `gorm:"column:deleted_at;index;" json:"deleted_at"`
+		CreatedAt time.Time      `gorm:"column:created_at;type:TIMESTAMP;" json:"created_at"`
+		UpdatedAt time.Time      `gorm:"column:updated_at;type:TIMESTAMP;" json:"updated_at"`
+		DeletedAt gorm.DeletedAt `gorm:"column:deleted_at;type:TIMESTAMP;index;" json:"deleted_at"`
 		Status    int8           `gorm:"column:status;default:0;index;" json:"status"` // 状态：默认为0，-1禁止，1为正常
 	}
 
@@ -38,14 +38,14 @@ type (
 	Std_ICUD struct {
 		ID        uint           `gorm:"column:id;primarykey;"  json:"id"`
 		CreatedAt time.Time      `gorm:"column:created_at;" json:"created_at"`
-		UpdatedAt time.Time      `gorm:"column:updated_at;" json:"updated_at"`
-		DeletedAt gorm.DeletedAt `gorm:"column:deleted_at;index;" json:"deleted_at"`
+		UpdatedAt time.Time      `gorm:"column:updated_at;type:TIMESTAMP;" json:"updated_at"`
+		DeletedAt gorm.DeletedAt `gorm:"column:deleted_at;type:TIMESTAMP;index;" json:"deleted_at"`
 	}
 
 	// standard ID,Created definition.
 	Std_IdCreated struct {
 		ID        uint      `gorm:"column:id;primarykey;"  json:"id"`
-		CreatedAt time.Time `gorm:"column:created_at;" json:"created_at"`
+		CreatedAt time.Time `gorm:"column:created_at;type:TIMESTAMP;" json:"created_at"`
 	}
 
 	// standard PassportID,PassportIdentity definition.