The faults occurring in the input ports and crossbar of the router will seriously affect the performance of the entire network in Three-dimensional Network-on-Chip.This article proposes a fault and congestion-aware fault-tolerant router.By adding a redundancy of the input port and the bypass bus

our scheme can achieve fault tolerance of input ports and crossbar faults

and can effectively solve the congestion problem in the case of no fault port using the redundant port.The fault tolerance mechanism proposed can tolerate more fault-routers and still maintain good performance in a serious case of congestion.