Aiming at the typical avionics Fibre Channel (FC) switched network, considering the difference between the impact of the overall failure and the independent port failure on the network reliability, and also considering the demand of analysis to different redundancies, we built failure models of the node, the interchanger, the link, the port to port network, and of the node to node network, thus to provide an intuitionistic modeling idea based on matrix.A failure sample generating method and a network reliability calculating method based on simulation were provided, and a quantitative analysis was made to the avionics FC switched network reliability by use of a number of cases.The models and methods above can provide a theoretical support for reliability design of avionics FC switched network.