Camphor is colorless to white, translucent block or powder, with camphor smell, and is widely used. In medicine, camphor is used as a nerve stimulant and local stimulant, and can be used in cooling and heat reducing drugs such as Shidishui and Rendan; It can also be used to prepare food essence such as peppermint, white lemon and nuts, as well as daily essence such as toilet water and daily cosmetics. In addition, camphor is widely used in celluloid and photographic film, as a stabilizer for making smokeless gunpowder, and as a raw material for manufacturing sodium camphor sulfonate.