VO2 is a thermal discoloration material that changes greater change before and after the phase change point (68 ° C). Based on this characteristic, VO2 has also become a widely used functional material. It has a particularly prominent role in many aspects such as infrared radiating heat metering, infrared pulse laser radiation protection film, smart window, thermistor, and solar panels. However, the defect in practice is mainly due to the high phase change temperature. For practical applications, the deformation temperature needs to be reduced through various means and experimental methods. Among them, tungsten doping is a very common practice.