Abstract: The variable light transmission smart film material was applied to planting of peach trees in low latitude plateau．Comparative test results showed that application of material could promote growth rate of flower buds and fruit setting rate of experimental group, promote development of fruit epidermis, improve fruit quality, increase peach yield and improve economic properties of peach trees．The variable light transmission smart film material board can improve light environment of orchard, realize double harvest of fruit quality and yield, increase economic benefits of fruit growers and help improvement of the industry．