Anti insect net is made by drawing of high-quality polyethylene, adding to prevent aging agent, anti-UV radiation chemical agents. With tensile strength, thermal, water resistance, corrosion resistance, aging resistance, avirulent insipidity and easy to dispose of waste, etc. Correct storage its life can reach 3-5 years. Insect proof window screen not only has shading effect, mothproof function but also protects the crops and fruits from the storm scour, hail attacks and other natural disasters, it is a kind of new agricultural covering materials.