Cockpit human machine interface (HMI) is the most important bridge between the pilot and the aircraft, and it also impact the operation efficient and safety. In this paper, it takes the civil aircraft design as an example, discusses the design problems and the theory of the cockpit HMI design philosophy during the cockpit design, built an evaluation index list based on the airworthy regulations for the cockpit HMI evaluation. It can improve the evaluation efficiency of the evaluation and verify activities during the cockpit design, promote to design a better cockpit HMI according to the regulations.