This course focuses on the main parameters and specifications of the wheels of the automobile driving system, through the video can let us clearly understand how the wheels are manufactured, so that students have a more vivid and intuitive understanding of the wheel parameters; introduces the composition of the suspension, the key parameters and classifications, and recognizes the working principle of the active suspension; and then the composition and classification of automobile steering system is explained, through the understanding of the composition of the steering system, students could understand the safety threat of the automobile steering system for the internal occupant when the collision occurred and study how to take measures from the structure of vehicle to avoid harm to the occupants ; introduces the automobile commonly used rack and pinion steering gear working principle and composition; finally, the function of the braking system, types, structural characteristics and working principle is introduced. Through the study of the above courses, students can be familiar with the structural characteristics of automobile chassis, master the function, type, structural characteristics and working principle of the subsystems and key components of automobile chassis, and understand the advanced technology and structural characteristics of modern automobile chassis.