Abstract: This paper takes student as the center and graduation requirement as the guiding core idea.Re-determine the objectives of experimental teaching,refine the design of experimental content,improve the experimental teaching evaluation method.In the signal and system experiment teaching activities,students not only mastered the specific knowledge points,but also familiar with their application in engineering practice.Through training,we can gradually have the ability to solve the practical problems of simple engineering and establish a sense of thinking to solve complex engineering problems.