Tin dioxide is a colorless or white powdered inorganic compound with high chemical stability and excellent physical properties. It has a high melting point and boiling point, and has good stability in high temperature environment. Tin dioxide is a semiconductor material with a wide band gap, so it has a wide range of applications in electronics and optoelectronics, such as gas sensors, transparent conductive films and lithium-ion batteries. In addition, it can also be used to manufacture high refractive index optical glass, special ceramic materials, and as a catalyst, polish and so on. The excellent properties of tin dioxide make it have a wide prospect in the fields of environmental protection and medical materials.