在建筑物的设计中，疏散通道的设计是非常重要的内容，设计是否合理关系到火灾时建筑物内的人员能否安全及时地疏散。但现行规范中并没有涉及到如何判断不同疏散方案的合理性。提出了一种评价方法，采用疏散通道出口单位有效疏散宽度使用率作为主要的评价指标，能较好地反映出不同设计方案之间的差异，并对如何调整疏散通道的位置使其更有利于人员的安全疏散有一定的指导作用。

During designing a building, the design of evacuation is very important. The rationality of the design of evacuation determines whether people can evacuate from buildings. But the existing criterion does not relate to how to evaluate rationality of various designs of evacuation. This paper advances a method which uses the using rate of unit effective evacuation width as the major parameter to reflect the difference of various designs. And this method can give advices to adjust the design to profit personal evacuation.