Magnesium oxide powder is a flexural, compressive, high strength, pneumatic, cementitious material, widely used in national defense, medicine, chemical industry, paper, shipbuilding and other industries. In the building material industry, it can be made into tyre boards, particleboard, thermal insulation columns, railings, artificial marble, asbestos tiles, ordinary tiles, wallboards and paving floors. With the progress of science and technology, the use of light burnt magnesia powder is more extensive. It can be used as civil products, light and heavy machinery packaging box, bottom beam of packaging, high temperature refractory materials, beautiful, generous and glossy furniture, and casting model in mechanical industry.