All public buildings that need to be sprayed must be equipped with fire shutters used in fire zones according to the requirements of evacuation routes. If the fire protection level is above Grade II, spraying must be installed. Businessmen larger than 300 square meters must set up sprinklers. Automatic sprinkler system is a kind of fire extinguishing device and a widely used fixed fire fighting facility, which has the characteristics of low price and high fire extinguishing efficiency.