Thin film greenhouses make full use of solar energy, have a certain insulation effect, and can adjust the temperature and humidity inside the greenhouse within a certain range by rolling the film. Therefore, in northern China, film greenhouses mainly serve as insulation and cultivation methods for early spring and delayed autumn. Generally, they can be advanced by 30-35 days in spring and delayed by 20-25 days in autumn, but they cannot be used for overwintering cultivation; In the southern region of China, film greenhouses can be used not only for insulation and winter cultivation of vegetables and flowers in winter and spring, but also for replacing shading nets for facilities such as shading, cooling, rain prevention, wind prevention, and hail prevention in summer and autumn.