介绍了自组网内的延迟限制 ＱｏＳ（Ｑｕａｌｉｔｙ－ｏｆ－Ｓｅｒｖｉｃｅ）路由算法，并对它进行了仿真。该算法可在网络状态信息不精确的情况下，同时并行寻找多条路径，以优化路径选择。当节点移动、离开、加入时，引入容错机制，以便于路径保持。通过仿真可以看出，该算法在适度的寻路代价下，可以得到较高的呼叫接收率。 This paper introduces the QoS (Quality-of-Service) routing algorithm in ad hoc networks and simulates it. The algorithm can find multiple paths simultaneously in parallel to optimize path selection under the condition of inaccurate network state information. When the node moves, leaves, joins, introduces the fault tolerance mechanism, in order to maintain the path. It can be seen through the simulation that the algorithm can obtain a higher call receiving rate under the proper path cost.