Human behavior recognition is playing an increasingly important role in security monitoring, medical diagnosis and monitoring, motion analysis, intelligent interaction, virtual reality and other fields. The use of thermal imaging equipment to collect sequence images of the scene, and then using image processing and pattern recognition technology to analyze and identify the type of behavior of the observed person in the sequence image, and use natural language to describe it is the main method of current human behavior recognition research. . Because human behavior includes posture, individual behavior, interactive behavior and group behavior.