By a series of experiments in the Fire Emulator/ Detector Evaluator, we get the nuisance immunity features of ionization and photo-electric smoke detector, with some theoretical analysis conducted. 本文主要通过FE/DE平台上一系列的实验,测量了离子感烟探测器、光电感烟探测器在不同环境下的抗干扰性,并进行了一些理论分析。