Early morphological concepts of acupoint

The idea of acupoint in Internal Classic was investigated in this article. And it is held that obvious morphological features, including sunk surfaces, joint caves, gaps between muscles, collate-rals, pulses, blocked tendons and tenderness at the surface of the body can be found at where acupoints locate. The morphological characters of acupoint conform to its original meanings. To locate acupoints by their morphological features provides evidence basis for point locating in clinic, which is considered to be favourable for clinical practice. Since locations of acupoints gradually fixed in later ages, which take proportional measurement as the main method, acupoint locating is also gradually divorced from their early concepts and practice.