Abstract: Spray drift of pesticide is an important factor to cause environmental contaminations and low effectiveness of pesticide applications. To analyze the drift affecting factors and the droplet drift dynamics could not only provide the theoretical basis for the research of the droplet drift control and the spraying equipment, but also increase the efficiency of pesticide applications, reduce the droplet drift and improve the environmental protection. Advanced equipment and techniques to reduce the spray drift in developed countries were reviewed. On the basis of analyzing the current situation about the spray technique of pesticide in China, several application methods to reduce spray drift and suggestions on developing new spray equipment and spray drift reduction technologies were proposed.