Abstract:As a new type of aviation bus technology, AFDX (Avionics Full-Duplex Switched Ethernet) has been successfully applied to Airbus A380/400M, Boeing B787 and other aircraft. The emergence of the AFDX network provides a high real-time and reliability solution for the development of the avionics system. How to effectively demonstrate the reliability of a AFDX network system has become a major issue in the AFDX network system testing. Through the use of data transceiver, network monitoring and fault injection, the reliability of AFDX network system is evaluated effectively, and a AFDX network system test and evaluation system is implemented. After testing, the test system can effectively evaluate and test the reliability of AFDX network system.