The purpose of equipping the laboratory with fire-fighting equipment is to put out the fire locally in case of fire and help scientific researchers to evacuate from the fire. According to "People's Republic of China (PRC) Fire Protection Law" and "National Fire Protection Law", fire extinguishers should be placed in closed places. There are a lot of chemicals in the laboratory, which will lead to a fire first in the test. When a fire breaks out, use a fire extinguisher to put out the fire locally in time, so as to help researchers evacuate from the fire and ensure the life of researchers and the safety of scientific research results.