Abstract: Because Matlab in drawing the principle of automatic control of the relevant graphics with limitations,it often has a higher requirement to the users with a good command of the programming language.In view of this,the paper develops a digital experiment software for teaching and research.The software can achieve the functions that when enters the relevant parameters it can generate the relevant graphics.This paper designs the experimental interface by using Matlab GUI tool,utilizing the modular design methods.First design the various sub-modules,and then callback function to connect the modules together to form a system..Meanwhile,it also designs to use Simulink simulation experiment to facilitate the students to better study the principle of self-control theory courses to improve the classroom efficiency.This system has some distinguishing features such as user-friendly,easy-to-use, strong functions,covering the main drawings of the principles of automatic control.The software can not only be used for experimental teaching,but also can be used in related areas of scientific research.