It is shown by the research of smoke flow and layering in smoke flow area and inert movement area that the means of measuring the height of smoke layer and qualitatively revealing the flow shape and properties by making use of tracer stick is viable. 对“死区”和烟气区内流动和分层现象的研究表明,利用示踪棒测量火灾烟气层高度并定性的揭示流动性状是可行的。