As the core composition of flight control system, the performance of flight control computer decides the whole performance index of flight control system, which ultimately affects the flight safety. As for the complicated structure and function of fulltime and fullauthority digital flybywire flight control system, this paper designs a set of test verification system for the automatic flight control computer function and performance test, taking automatic flight control computer test as the purpose, including the signal vote, redundancy management and control law software testing and so on. Through the dualredundant flight control computer test, the test verification system can effectively test the function and performance of flight control computer, reaching the design requirement.