diff --git a/modules/auth/user_form.go b/modules/auth/user_form.go
index 8575e7344..130586a5a 100755
--- a/modules/auth/user_form.go
+++ b/modules/auth/user_form.go
@@ -85,6 +85,7 @@ type RegisterForm struct {
 	VerifyCode         string `binding:"MaxSize(10)"`
 	Retype             string
 	GRecaptchaResponse string `form:"g-recaptcha-response"`
+	Agree              bool
 }
 
 // Validate valideates the fields
diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index c4f1a4648..2efaafdc9 100755
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -33,6 +33,7 @@ twofa = Two-Factor Authentication
 twofa_scratch = Two-Factor Scratch Code
 passcode = Passcode
 use_and_privacy_agree = I have read and agree to the <a target="_blank" href="%s">use agreement</a> and <a target="_blank" href="%s">privacy agreement</a>
+sign_up_agree_tips = should agree to the use agreement and privacy agreement!
 
 u2f_insert_key = Insert your security key
 u2f_sign_in = Press the button on your security key. If your security key has no button, re-insert it.
diff --git a/options/locale/locale_zh-CN.ini b/options/locale/locale_zh-CN.ini
index 016db899e..fe91aaed3 100755
--- a/options/locale/locale_zh-CN.ini
+++ b/options/locale/locale_zh-CN.ini
@@ -32,7 +32,8 @@ captcha=验证码
 twofa=两步验证
 twofa_scratch=两步验证口令
 passcode=验证码
-use_and_privacy_agree = 我已阅读并同意<a target="_blank" href="%s">使用协议</a>和<a target="_blank" href="%s">隐私协议</a>
+use_and_privacy_agree = 我已阅读并同意 <a target="_blank" href="%s">使用协议</a> 和 <a target="_blank" href="%s">隐私协议</a>
+sign_up_agree_tips = 注册时需同意使用协议和隐私协议
 
 u2f_insert_key=插入安全密钥
 u2f_sign_in=按下安全密钥上的按钮。如果安全密钥没有按钮，请重新插入。
diff --git a/routers/user/auth.go b/routers/user/auth.go
index 572cbd2f3..95f5a3cb1 100755
--- a/routers/user/auth.go
+++ b/routers/user/auth.go
@@ -1315,6 +1315,11 @@ func SignUpPost(ctx *context.Context, cpt *captcha.Captcha, form auth.RegisterFo
 			return
 		}
 	}
+	
+	if !form.Agree {
+		ctx.RenderWithErr(ctx.Tr("sign_up_agree_tips"), tplSignUp, &form)
+		return
+	}
 
 	u := &models.User{
 		Name:        form.UserName,