diff --git a/captcha.go b/captcha.go
index 2bb489a..80f55e7 100644
--- a/captcha.go
+++ b/captcha.go
@@ -8,6 +8,6 @@ import (
 
 type Captcha interface {
 	HttpMiddleware(container *do.Injector) func(next http.Handler) http.Handler
-	Verify(answer, salt string, clear bool) error
-	Generate(captchaUuid string, u User) (answer, salt string, err error)
+	Verify(id int64, answer string, clear bool) error
+	Generate(captchaUuid, recipient, ip string, u User) (body string, id int64, err error)
 }
diff --git a/errno.go b/errno.go
index 9278b8d..825ca1f 100644
--- a/errno.go
+++ b/errno.go
@@ -79,29 +79,24 @@ var (
 	ErrUserWechatRegister   = &Errno{Code: 20309, Msg: "通过微信注册失败"}
 
 	// 审批错误, 前缀是 204
-	// 审批节点不存在
-	ErrUserApprovalFlowNotFound = &Errno{Code: 20401, Msg: "审批节点不存在"}
-	// 下级审批节点不存在
+	ErrUserApprovalFlowNotFound     = &Errno{Code: 20401, Msg: "审批节点不存在"}
 	ErrUserApprovalNextFlowNotFound = &Errno{Code: 20402, Msg: "下级审批节点不存在"}
-	// 该审批已结束
-	ErrUserApprovalFlowDone = &Errno{Code: 20403, Msg: "该审批已结束"}
-	// 该审批已撤销
-	ErrUserApprovalFlowCancelled = &Errno{Code: 20404, Msg: "该审批已撤销"}
-	// 超过自动扭转最大深度
-	ErrUserApprovalMaxExecuteDeep = &Errno{Code: 20405, Msg: "该审批已超过自动扭转最大深度撤销"}
-	// 该审批流已占用
-	ErrUserApprovalExists = &Errno{Code: 20406, Msg: "该审批流已被占用"}
+	ErrUserApprovalFlowDone         = &Errno{Code: 20403, Msg: "该审批已结束"}
+	ErrUserApprovalFlowCancelled    = &Errno{Code: 20404, Msg: "该审批已撤销"}
+	ErrUserApprovalMaxExecuteDeep   = &Errno{Code: 20405, Msg: "该审批已超过自动扭转最大深度撤销"}
+	ErrUserApprovalExists           = &Errno{Code: 20406, Msg: "该审批流已被占用"}
 
 	// 请求第三个接口
 	ErrApiRequest   = &Errno{Code: 20501, Msg: "Api Request Error"}
 	ErrApiResponsed = &Errno{Code: 20502, Msg: "Api Responsed Error"}
 
 	// 验证码错误,206
-	ErrCaptcha             = &Errno{Code: 20600, Msg: "验证码错误"}
-	ErrCaptchaInvalid      = &Errno{Code: 20601, Msg: "验证码错误"}
-	ErrCaptchaExpired      = &Errno{Code: 20602, Msg: "验证码已过期"}
-	ErrCaptchaSend         = &Errno{Code: 20603, Msg: "验证码发送错误"}
-	ErrCaptchaSendInterval = &Errno{Code: 20604, Msg: "验证码发送失败, 请稍后再试"}
+	ErrCaptcha             = &Errno{Code: 20601, Msg: "验证码生成器不存在"}
+	ErrCaptchaGenerate     = &Errno{Code: 20602, Msg: "验证码生成错误"}
+	ErrCaptchaInvalid      = &Errno{Code: 20603, Msg: "验证码无效"}
+	ErrCaptchaExpired      = &Errno{Code: 20604, Msg: "验证码已过期"}
+	ErrCaptchaSend         = &Errno{Code: 20605, Msg: "验证码发送错误"}
+	ErrCaptchaSendInterval = &Errno{Code: 20606, Msg: "验证码发送失败, 请稍后再试"}
 )
 
 // 使用 错误码 和 error 创建新的 错误