1, control the spread of smoke and prevent the fire from expanding. Prevent gas or coal dust explosion, and prevent airflow reversal caused by fire wind pressure. It is conducive to the evacuation of personnel and the safety of ambulance personnel. Create favorable fire extinguishing conditions.

2. Fire refers to the disaster caused by burning out of control in time or space. In the new standard, fire is defined as burning out of control in time or space. Among all kinds of disasters, fire is one of the most frequent and common major disasters that threaten public safety and social development. Humans can use and control fire, which is an important symbol of the progress of civilization. Therefore, the history of human use of fire and the history of fighting against fire are accompanied by each other. People use fire at the same time, constantly sum up the law of fire occurrence, and reduce fire and its harm to human beings as much as possible. In case of fire, people need to escape safely as soon as possible.

3, escape and self-help need skills, time is life, and self-help can survive. If the clothes on your body cause a fire due to static electricity or careless smoking, you should take them off or tear them off quickly, or roll them up on the spot to crush the fire, but be careful not to roll them too fast. Never run in burning clothes. If there is water, it can be quickly doused with water, but when the human body is burned by fire, it must not be doused with water to prevent infection. Such as dormitories, classrooms, laboratories, auditoriums, hotels, restaurants, canteens, baths, supermarkets and so on. If there is a fire, you can escape in the following ways. Cover your nose and mouth with a towel and handkerchief, cover your body, close it up, and take refuge in the bathroom.