diff --git a/internal/data/mixrepoimpl/cmb.go b/internal/data/mixrepoimpl/cmb.go
index 1ee643c..2e7f3fb 100644
--- a/internal/data/mixrepoimpl/cmb.go
+++ b/internal/data/mixrepoimpl/cmb.go
@@ -132,12 +132,12 @@ func (s *CmbMixRepoImpl) Verify(_ context.Context, req *v1.CmbRequest) (string,
 		return "", err2.ErrorCmbVerifyFail("签名验证失败")
 	}
 
-	bizStr, err := cmb.DecryptBody(&cmb.Decrypts{EncryptBody: req.EncryptBody, PrivateKey: s.bc.Cmb.Sm2Prk})
+	bizBytes, err := cmb.DecryptBody(&cmb.Decrypts{EncryptBody: req.EncryptBody, PrivateKey: s.bc.Cmb.Sm2Prk})
 	if err != nil {
 		return "", err2.ErrorCmbBizContentDecryptFail(err.Error())
 	}
 
-	return string(bizStr), nil
+	return string(bizBytes), nil
 }
 
 func (s *CmbMixRepoImpl) GetRequest(_ context.Context, reqBo *bo.CmbRequestBo) (*v1.CmbRequest, error) {