diff --git a/src/modules/oam/service/kpi.go b/src/modules/oam/service/kpi.go
index 3d73d8c4..832f4c7d 100644
--- a/src/modules/oam/service/kpi.go
+++ b/src/modules/oam/service/kpi.go
@@ -183,11 +183,14 @@ func (s *KPI) saveKPIDataC(k oam.KPI, index int64) error {
 			item["err"] = err.Error()
 		} else {
 			if v.Unit == "%" {
-				resultInt64 := parse.Number(result)
-				if resultInt64 > 100 {
+				resultV, ok := result.(float64)
+				if !ok {
+					resultV = 0
+				}
+				if resultV > 100 {
 					result = 100
 				}
-				if resultInt64 < 0 {
+				if resultV < 0 {
 					result = 0
 				}
 			}