Abstract: A QoS multicast routing algorithm with multiple constraints is proposed based on mobile agents in Ad Hoc network.In this algorithm,the network information is collected by the mobile agents.Each source node creates a multicast tree with constraints on bandwidth and power.The node that has more remaining energy is selected as intermediate node as to extend the survival time of network.When links fail during data transmission,the algorithm will repair the path locally rather than retransmit the data,which will effectively reduce the probability of rerouting and data retransmission.Experiments with network simulator NS2 are conducted.The experiment results show that the new algorithm is very efficient and robust.