In the examination,comparison and analysis of the scientific material evidence in the court,infrared spectroscopy technology has its own advantages,which can be used to determine the type and composition of substances and to analyze the internal structure of substances and their physical and chemical properties.This paper will give a brief classification and overview of the many common physical evidence involved in forensic science according to the different attributes of material sources,based on the relevant knowledge of infrared spectroscopy technology,further elaborate the current application status and the latest progress of infrared spectroscopy technology in forensic scientific biological evidence and non-biological evidence,and to look forward to the future,in order to promote the deeper research and development of infrared spectroscopy technology in the field of forensic science.