关键词：Qos；能源成本；无线网络；蚁群算法
摘 要：Multicast routing technology of wireless sensor network is a method of transferring special data to a group of clients selectively; therefore,quality of the services is the key to evaluate the method.Ant colony algorithm is a bionic optimization algorithm.Improved QoS Multicast Routing Algorithm is proposed based on energy constraint and based on ant colony algorithm,it takes into account the energy cost routing,making the nodes to establish of minimum cost path under the condition of energy constraint.The results show that this algorithm can obtain better energy balance,improve the network services of the time.This algorithm applies to energy-sensitive multicast applications in wireless sensor networks.