diff --git a/internal/service/cmb.go b/internal/service/cmb.go
index 5d2302b..17258cf 100644
--- a/internal/service/cmb.go
+++ b/internal/service/cmb.go
@@ -202,6 +202,9 @@ func (s *VoucherService) CmbProductQuery(ctx http.Context) error {
 		return ctx.JSON(400, err)
 	}
 
+	replyBytes, _ := json.Marshal(reply)
+	log.Warnf("CmbProductQuery reply: %v", string(replyBytes))
+
 	return ctx.JSON(200, reply)
 }