diff --git a/service/dao/dao.go b/service/dao/dao.go
index 238f423..d311edf 100644
--- a/service/dao/dao.go
+++ b/service/dao/dao.go
@@ -14,7 +14,7 @@ import (
 type ExecuteResult struct {
 	Headers  []string                `json:"headers"`
 	Tables   []map[string]common.Any `json:"tables"`
-	TimeCost int32                   `json:"timeCost"`
+	TimeCost int64                   `json:"timeCost"`
 }
 
 type list []common.Any