As one of the important methods of fire fighting tactics, fire smoke ventilation is of great significance for the safe evacuation of personnel and the internal attack rescue of firefighters. This paper summarizes the research status of smoke ventilation tactics in China and other countries and surveys the domestic fire rescue personnel with questionnaires. It is found that the application proportion of smoke ventilation tactics in China is not high, and the commanders and soldiers do not understand smoke ventilation tactics is the main reason restricting their use. Through the investigation of underground and tunnel fire smoke ventilation methods and combined with typical cases, four enlightenments are drawn: The essence of smoke ventilation at fire sites is the reasonable control of fire smoke. Smoke ventilation at the fire site should be coordinated with fire fighting, search and rescue and personnel evacuation. Unreasonable smoke ventilation will have an adverse impact on rescue personnel. For tunnel and underground building fires, attention should be paid to the combination of fixed smoke ventilation facilities and mobile smoke ventilation equipment. Good

smoke ventilation is often a combination of various smoke ventilation methods. It is necessary to scientifically plan the smoke flow path and reasonably formulate smoke ventilation tactics in combination with the terrain, weather and other conditions of the fire site. The research results can provide a reference for fire fighters to formulate fire fighting and smoke ventilation tactics.

smoke ventilation, fire fighting and rescue, tactics, questionnaire investigation, case analysis