In recent years, some fire accidents have exposed problems that need to be improved in the configuration, use, maintenance and other links of fire extinguishers, which are mainly manifested in: First, some construction projects have not designed the configuration of fire extinguishers in accordance with the Code for Design of Extinguisher Configuration in Buildings, resulting in the total configuration and location not meeting the requirements of the specification, and the selected type of fire extinguisher is not suitable for the protected object, Especially when it should be configured