Abstract: To help students fully understand the nonlinear system, experiment teaching is an essential link and method. This paper adopts a progressive approach, taking the circuit design of the Lorenz system as an example, to illustrate the implementation progress of the design-based experiment, and examine the scientific research ability of students in an all-round way. Based on the existing mathematical model, a Lorenz circuit design model that meets the actual requirements is obtained through a combination of theoretical analysis and software simulation. Adopting the thinking mode of theory guiding practice, the validity of the circuit design model is verified by making a hardware experiment circuit. The software and hardware are combined to guide students to further understand the nonlinear system, cultivate their practical and innovative ability, and improve their scientific literacy.