Based on the dissection and cutting of engine parts, the structure and principle function are displayed in static or dynamic form, and the basic training course of the automobile is to identify the internal structure of the power system as the basic training course of the whole training plan, which enables the trainees to establish the basic structure and principle concept of the automobile engine, strengthens the students' understanding of the mechanical structure and principle in the process of the implementation of the task in the future, and provides a clear standard reference for learning the disassembly, maintenance, judgment and elimination of mechanical faults of the automobile engine. The display model is mainly composed of the original engine, geared motor, LED light strip, power switch, lighting control motherboard and mobile chassis, etc., which can meet the training needs of the structure and working principle of the automobile engine and transmission system.