The principle of plasma surface treatment is to use plasma to form a layer of film on the surface to improve surface performance. Plasma is a very low-temperature substance that includes electrons and atoms, which can achieve surface treatment effects through charge coordination or joint motion. Plasma treatment can greatly improve the efficiency of surface treatment technology and effectively reduce coating consumption. Plasma surface treatment requires certain equipment, mainly a plasma generator composed of a true cavity, transformer pump, and high-voltage system, to generate plasma flow. Plasma generators can generate different types of plasma, which have different temperatures and energies and can be precisely adjusted. Therefore, plasma can be used in different surface treatment processes.