Reflective film for agricultural use is used for farm heating, fill material. This reflective film with high water resistance, alkali, reflection, high rate, low cost and long life characteristics. After years of experiments show that vegetables, fruit trees, flowers and open Orchard production of reflective film, can be effective savings and income. Dapeng of winter low temperature, less sunlight greenhouse, reflective film applied can significantly increase the illumination duration and intensity, increase the room temperature, increase the temperature difference can obviously play a role in improving the quality of agricultural products and increase production. When used in the greenhouse to the North East-to pull a wire at the top, double width reflective film in the indirect joint bonding a reflective screen with a plastic cloth, vertically hanging on the wire, and lower down to the ground.