The aircraft brake system design environment is built to improve the scheme design efficiency and quality of aircraft brake. The rapid determination methods of brakes and anti-slip control system parameters are studied, the iterative method is adopted to meet the design issues. The dynamic characteristics of brake system and performance of brake device are estimated. The model of brake system built in MATLAB/Simulink is called by MATLAB engine to do dynamic analysis. The brake system of a UAV designed as a example works well, and coincides basically with the actual working condition, the results show that this paper provides a rapid effective method of aircraft brake design.