Magnesium oxide board is made of magnesium oxide, magnesium chloride, water as the main raw materials, wood chips, perlite, etc. are used as auxiliary fillers to mix and stir, and glass fiber cloth, non-woven cloth, etc. are used as reinforcing and toughening materials. In addition, additives can be added. Rolling and extrusion equipment flow production line production, under natural temperature conditions (10-35 ℃ is best), through its own exothermic reaction, the material is solidified.