It is an interdisciplinary subject, involving psychology, engineering, anthropology, biomechanics and other fields. Its purpose is to design more safe, easy-to-use and efficient machinery and equipment by studying the interaction process between people and machinery and equipment. The development of safety ergonomics can be traced back to the early 20th century. During the First World War, the army began to use airplanes and other mechanical equipment, but the design of these equipment did not meet the physiological and psychological characteristics of human beings, which led to many accidents. In order to solve this problem, the US military began to study the process of human-computer interaction and put forward some design principles, such as the visibility, readability, understandability and controllability of human-computer interface. With the passage of time, safety ergonomics has gradually become an independent discipline and has been widely used in industry, transportation, medical care and other fields. For example, in the aviation field, using the research results of safety ergonomics to design a safer and easier-to-use aircraft cockpit; In the medical field, the research results of safety ergonomics are used to design safer and easier-to-use medical equipment. The birth of safety ergonomics is to solve the safety problems encountered by human beings when using machinery and equipment. Its development process is inseparable from the development of science and technology, and its application scope is becoming more and more extensive.