Ergonomics is defined as “the scientific discipline concerned with the understanding of interactions among human and other elements of a system.” The main goal of ergonomics is to design a system as human-centered manner, and to evaluate it from the view point of safety, health and wellbeing of human being considering with the efficiency of the system. One of the most important concepts of ergonomics is man-machine interface that made it possible to analyze the interaction between human and machines. Japan Ergonomics Society was founded in 1964 and became an important member of International Ergonomics Association, and now its activities are extended to ISO/TC159, certification of professional ergonomist, etc. The society will act toward development of useful science and technology and of social awareness of ergonomics.