Abstract: The cultivation technology of millet covered with plastic film is to realize the purpose of temperature compensation and maintenance, soil moisture control and air humidity in the process of millet growth, shorten the maturity cycle of millet and improve the quality and yield of millet. In recent years, Zuoquan County has vigorously promoted the policy of water-saving irrigation technology and adjusting measures to local conditions, and the plastic film cultivation technology has been widely promoted. Through the research on the cultivation technology of millet covered with plastic film, the application of this technology is further optimized to promote the high efficiency and yield increase of millet.