Abstract: Advanced gas sensors have the advantages of high-sensitivity,miniaturization,low cost,and online monitoring,which are widely used in industrial safety,environmental monitoring and medical health fields.The sensors play an important role in multi-scene intelligent perception monitoring.The performance optimization methods of advanced gas sensors from the aspects of sensitive materials,device structures and artificial intelligence algorithms are comprehensively analyzed.The application research of advanced gas sensors in petrochemical industry,power equipment,health care,energy security and mine safety are summarized.The important role of advanced gas sensors in many fields related to national economy and people's livelihood is described.In the future,advanced gas sensors will develop in the direction of high reliability,miniaturization and intelligence to meet more industry needs and empower new productive development.