Abstract: Due to the deadlock problem of network on chip, the paper designs one fully adaptive router, which based on the proposed thought- adaptive routing algorithms of virtual network.It mainly introduces the structure of the router's system and algorithm, in the end, a high effective and good performance router is completed, and simulates in the 2D Mesh topology structure.It makes the router deadlock-free adaptive routing come true, reducing the average network latency, and improving the network throughput.