diff --git a/cluster/cluster.go b/cluster/cluster.go
index 7e82315..e1295b4 100644
--- a/cluster/cluster.go
+++ b/cluster/cluster.go
@@ -230,6 +230,10 @@ func (slf *CCluster) Call(NodeServiceMethod string, args interface{}, reply inte
 	if nodeid == GetNodeId() {
 		//判断服务是否已经完成初始化
 		iService := service.InstanceServiceMgr().FindService(serviceName)
+		if iService == nil {
+			service.GetLogger().Printf(sysmodule.LEVER_ERROR, "CCluster.Call(%s): NodeId %d cannot find.", NodeServiceMethod, nodeid)
+			return fmt.Errorf("CCluster.Call(%s): NodeId %d cannot find..", NodeServiceMethod, nodeid)
+		}
 		if iService.IsInit() == false {
 			service.GetLogger().Printf(sysmodule.LEVER_ERROR, "CCluster.Call(%s): NodeId %d is not init.", NodeServiceMethod, nodeid)
 			return fmt.Errorf("CCluster.Call(%s): NodeId %d is not init.", NodeServiceMethod, nodeid)
diff --git a/util/map.go b/util/map.go
index c3d3b44..50d7bfc 100644
--- a/util/map.go
+++ b/util/map.go
@@ -85,7 +85,7 @@ func (m *Map) Len() int {
 	return m.UnsafeLen()
 }
 
-func (m *Map) UnsafeRange(f func(interface{}, interface{})) {
+func (m *Map) UnsafeRange(f func(key interface{},value interface{})) {
 	if m.m == nil {
 		return
 	}
@@ -94,13 +94,13 @@ func (m *Map) UnsafeRange(f func(interface{}, interface{})) {
 	}
 }
 
-func (m *Map) RLockRange(f func(interface{}, interface{})) {
+func (m *Map) RLockRange(f func(key interface{},value interface{})) {
 	m.RLock()
 	defer m.RUnlock()
 	m.UnsafeRange(f)
 }
 
-func (m *Map) LockRange(f func(interface{}, interface{})) {
+func (m *Map) LockRange(f func(key interface{},value interface{})) {
 	m.Lock()
 	defer m.Unlock()
 	m.UnsafeRange(f)