在节点移动性大、资源受限的移动自组网中,服务的自动发现至关重要.但现有的服务发现协议都缺少一种自适应机制,控制开销和服务请求时延等问题.为此,提出了一种基于混合区域路由协议ZRP的网络层服务发现模型ZSDMAN.该模型结合使用了路由区域半径调节机制,节点可自动调节区域半径的大小以适用网络拓扑结构变化. In mobile ad hoc networks with large node mobility and limited resources, automatic discovery of services is crucial, but existing service discovery protocols lack an adaptive mechanism, control overhead and service request latency. In this paper, ZSDMAN, a service discovery model of network layer based on hybrid regional routing protocol (ZRP), is proposed in this paper, which uses a routing area radius adjustment mechanism. Nodes automatically adjust the radius of the area to adapt to the change of network topology.