Expert system of graphics aided intelligent switch generation is presented in order to improve the universality and validity of the existing operation ticket automatic making system. The function structure of the whole system is introduced in this paper, doing some improvement to the design of graphic class, graphics aided intelligent switch generation and integration of graph-based database. It is guaranteed for the rationality and validity of the operation ticket by the forward-inference of expert system. Besides, the expansibility and universality of graphics edited module in the traditional graphics design is advanced by the object-oriented technique. So it is easy to operate and maintain by the integration of graph-based database.