Due to the arrival of summer, some high-temperature production and manufacturing industries, will encounter a high temperature of more than 40 degrees. Many of them, such as furnaces, heat treatment plants. Even in winter, the temperature in the workshop is over 25 degrees. In summer, the working temperature rises to above 35 degrees, and the temperature in the production workshop is extremely high, which can reach 50 degrees. The actual operation of workers in long-term high-temperature working environment will accelerate people's fatigue, endanger work psychology, and reduce work efficiency and quality. In addition, the high temperature of the natural environment also has a negative impact on the health of employees.