diff --git a/controllers/user/userLogin.go b/controllers/user/userLogin.go
index 49a8030..ee7b29c 100644
--- a/controllers/user/userLogin.go
+++ b/controllers/user/userLogin.go
@@ -107,6 +107,7 @@ func UserLogin(c *gin.Context) {
 				Telephone:   phoneInfo.PhoneNumber,
 				// 若还有 password、avatar_url、birthdate、bio 等字段需要赋值，可在此补充
 				// 比如 Password: "默认密码"（实际中密码应加密存储），AvatarUrl: "默认头像地址" 等
+				Birthdate: nil,
 			}
 
 			if err := databaseInit.UserDB.Create(&newUser).Error; err != nil {
@@ -180,16 +181,16 @@ func pkcs7Unpad(data []byte) []byte {
 
 // 定义与表结构对应的用户模型
 type UserInfo struct {
-	Uid         string    `gorm:"column:uid;primaryKey"`
-	Telephone   string    `gorm:"column:telephone"`
-	Password    string    `gorm:"column:password"`
-	AvatarUrl   string    `gorm:"column:avatar_url"`
-	Gender      int       `gorm:"column:gender"`
-	Birthdate   time.Time `gorm:"column:birthdate;type:datetime"`
-	CreatedTime time.Time `gorm:"column:createdtime;type:datetime"`
-	UpdatedTime time.Time `gorm:"column:updatedtime;type:datetime"`
-	Bio         string    `gorm:"column:bio"`
-	Username    string    `gorm:"column:username"`
+	Uid         string     `gorm:"column:uid;primaryKey"`
+	Telephone   string     `gorm:"column:telephone"`
+	Password    string     `gorm:"column:password"`
+	AvatarUrl   string     `gorm:"column:avatar_url"`
+	Gender      int        `gorm:"column:gender"`
+	Birthdate   *time.Time `gorm:"column:birthdate-date;type:datetime;nullable"`
+	CreatedTime time.Time  `gorm:"column:createdtime;type:datetime"`
+	UpdatedTime time.Time  `gorm:"column:updatedtime;type:datetime"`
+	Bio         string     `gorm:"column:bio"`
+	Username    string     `gorm:"column:username"`
 }
 
 // 自定义表名