Plastics: silica powder is an ideal reinforcing agent for polypropylene (PP), polyvinyl chloride (PVC), polyethylene (PE), nylon (PA) and other products. It not only has a large filling amount, but also has good tensile strength. The masterbatch can be used in PVC floor tiles to improve the wear resistance of the products. Silicon micro powder is applied to olefin resin film (dosage 10-12%). Its powder is evenly dispersed, has good film-forming property and strong mechanical properties. Compared with the plastic film produced with PCC as filler, the infrared transmittance is reduced by more than 10%, which is very beneficial to the application and promotion of agricultural greenhouse film. It can also be used in the fields of wire and cable sheath.