有顶商业步行街在新版建筑设计防火规范中首次被提出,但是商业步行街的界定标准尚未统一,有顶商业步行街的设计大多依赖消防性能化设计,防火分区划分,安全疏散、防排烟系统设置等标准还需进一步在工程中积累和总结,本文旨在通过工程实例分析提出安全疏散中采用合理布置剪刀楼梯,采用水幕+防火玻璃进行防火分隔,采取室内机械排烟+室外自然排烟相结合控制烟气进行防火设计,仅供借鉴。 The top commercial pedestrian street was first proposed in the new building design fire protection code, but the definition of commercial pedestrian street has not been uniformed. Most of the design of the top commercial pedestrian street relies on fire performance design, fire protection zoning, safety evacuation, smoke control system settings The standard needs to be further accumulated and summarized in the project. The purpose of this paper is to propose a reasonable arrangement of scissors staircase in the safety evacuation, fire separation using water curtain + fire-proof glass and indoor smoke exhaust combined with outdoor natural smoke exhaust Fire control flue gas design, for reference only.