A study on the correlation between four GCM types and Dam and Bangkwang types of Hyungsang medicine comes to the following conclusions : GCM I type is closely related to Bangkwang type in Hyungsang medicine. GCM II type corresponds to Dam type. In terms of obesity and emaciation, GCM I type is related to obesity and GCM II type to emaciation. In terms of Right and Left, GCM I type is more active in Left, GCM II type in Right. In terms of movement, GCM I and II types are kinetic and GCM III and IV types are static. In terms of Front and Back, the disease of GCM I type usually appears on Back but the treatment starts on Front. In GCM II type, disease mainly occurs on Front but the treatment starts on Back. GCM I type is susceptible to an alimentary disease and constitutionally predisposed to damp-phlegm in Hyungsang medicine. GCM II type is easily affected by a circulatory illness and very vulnerable to heat with blood deficiency and depression and stagnation of Ki.