'Body theory' can be discussed from various perspectives. In this lecture, I will discuss body theory from various perspectives such as physical medicine, psychiatry, psychosomatic medicine, psychoanalysis and contemporary medicine. The psycho and the physical soma are inseparably related, and the psychodynamics surrounding the body can be widely observed from the healthy development of human beings to the pathological state. The purpose of this lecture is to expand the student's perspectives regarding the body.