Abstract: In view of the problems such as short teaching time heavy teaching tasks and disconnection between teaching content and practice, this paper puts forward the comprehensive experimental design scheme of college graduates from the practical situation of industrial and mining enterprises’ safety production, combined with the frontier achievements of discipline development, in order to improve the teaching quality and improve the ability of professional postgraduates to solve practical problems. Taking "Fractal theory and its application" as an example, the selection and design of experimental forms, contents and processes were determined, and two comprehensive experiments on the machine were determined. The teaching practice shows that the setting of the comprehensive experiment on the machine improves the enthusiasm of students’ learning, effectively cultivates and improves the students’ ability to solve practical problems, and lays a good foundation for the follow-up internship and employment of professional postgraduates..