根据火灾发展和人员行动的时间线，对建筑火灾中人员疏散的要求进行了分析，结合某礼堂的结构特点，讨论了火灾释热速率和危险临界条件的设定方法。并按模拟计算结果，对其可能火灾中影响人员疏散的因素给出半定量评价。 According to the time line of fire development and personnel action, the evacuation requirements of building fires were analyzed. Combined with the structure characteristics of a hall, the setting methods of fire heat release rate and dangerous critical conditions were discussed. According to the results of simulation, we give a semi-quantitative evaluation of the factors that may affect the evacuation of personnel in the fire.