diff --git a/kernel/av/value.go b/kernel/av/value.go
index 6ea5d3f99..2be6b01f1 100644
--- a/kernel/av/value.go
+++ b/kernel/av/value.go
@@ -19,6 +19,7 @@ package av
 import (
 	"fmt"
 	"math"
+	"reflect"
 	"sort"
 	"strconv"
 	"strings"
@@ -808,7 +809,7 @@ func (r *ValueRollup) BuildContents(keyValues []*KeyValues, destKey *Key, relati
 			continue
 		}
 
-		if val := destVal.GetValByType(destKey.Type); nil == val {
+		if val := destVal.GetValByType(destKey.Type); nil == val || reflect.ValueOf(val).IsNil() {
 			// 目标字段因为修改类型导致空值
 			continue
 		}