全面介绍了半导体气敏元件的选择性研究在国内外的发展状况 ,并重点论述了选择性研究中出现的一系列新方法、新材料及新技术等 ;在半导体气敏材料中加入催化剂和添加剂、控制气敏传感器的工作温度、使用气体过滤膜、使气敏材料纳米化等是提高半导体气体传感器的选择性的一个主要途径。在气敏元件选择性研究的新进展等方面也作了较详细的论述。对提高气敏元件选择性的研究具有重要的参考价值 A comprehensive introduction to the development of semiconductor gas sensor’s selectivity research at home and abroad is given, and a series of new methods, new materials and new technologies emerging in selective research are discussed in detail. Catalysts and additives are added to semiconductor gas sensitive materials , Controlling the working temperature of the gas sensor, using the gas filter membrane, making the gas-sensitive material nano-scale and so on are one of the main ways to improve the selectivity of the semiconductor gas sensor. In the gas sensor selectivity of the new progress has also made a more detailed discussion. It has important reference value to improve the selectivity of gas sensor