In recent years

chemical terrorist attacks and chemical accidents that have occurred continuously at home and abroad are still a major threat to human survival and national security.Chemical detection is the eye for chemical emergency disposal and rescue.Skillful mastery and proper use of detection equipment are the key factors in dealing with chemical threats and reducing losses and casualties.The detection equipments based on chemical sensing and other techniques possess the characteristics of fast response

intelligence and portability

and have the advantages of remote monitoring and real time duty.In this paper

the principles

performance

advantages and disadvantages of the on site detection equipments including electrochemical sensor

mass sensitive sensor

infrared sensor

Raman sensor

ion mobility spectrometry detector

flame photometric detector

photo ionization detector and remote telemetry sensing equipment are summarized.Specifically

the latest progress of detection equipments dealing with chemical threats is mainly described.The development trend and application prospects of chemical sensing equipments are prospected

which will provide a reference for the further research and application of chemical detection equipments in response to chemical threats.