diff --git a/server/wheelserver/mt/MapGrid.go b/server/wheelserver/mt/MapGrid.go
index b9b18caa..dc6bbbe9 100644
--- a/server/wheelserver/mt/MapGrid.go
+++ b/server/wheelserver/mt/MapGrid.go
@@ -22,6 +22,9 @@ type MapGridTable struct {
 }
 
 func (this *MapGrid) Init1() {
+	if this.MapGrid.GetReward() == "" {
+		return
+	}
 	tmpStrs := strings.Split(this.MapGrid.GetReward(), "|")
 	for _, tmpStr := range(tmpStrs) {
 		tmpStrs2 := strings.Split(tmpStr, ":")