Abstract: Faced with the increase of concurrent processing for NoC,a novel multicast router based on path is proposed in this paper,which introduces the multicast of internet to the design of NoC routers.This router adopts packets which contains a number of destinations and sub-packets and realizes the efficient transmission of packets to many destinations.At the same time,the router avoids the occurrence of deadlock routing in the process of transmitting packets referenced to the deadlock-free processing mode of Hamiltonian path.The model is designed by VerilogHDL and its function simulation,timing evaluation and synthesis are implemented on Synopsys EDA platform.