diff --git a/src/modules/sign/sign.controller.js b/src/modules/sign/sign.controller.js
index 5da0d7e..f1eed13 100644
--- a/src/modules/sign/sign.controller.js
+++ b/src/modules/sign/sign.controller.js
@@ -72,6 +72,11 @@ module.exports = {
                 code: 1,
                 msg: 'Missing required parameters'
             });
+            const validInviter = await User.findById(inviter).catch(err => null);
+            if (!validInviter) return res.json({
+                code: 4,
+                msg: '邀请人不存在'
+            });
             const isCodeValid = await Code.verifyCode({ id: phone, code, type: CODE_TYPE['signUp'] });
             password = Crypto.hash(password, { salt: PWD_HASH_SALT });
             if (isCodeValid) {