[Understanding of the theories of , and in the correlation with meridians and organs].

Based on the original text of (), the theories of , and are analyzed deeply and the practical significance is explored on the correlation with meridians and organs. , and represent respectively the relevant rules between the body surface and internal organs in different patterns and they are the foundation of the multiple correlations of the upper and the lower, the internal and the external and the horizontal and the transverse between meridians and organs. The understanding above not only contributes to the recognition and the exploration of the relevant essence of meridians and organs, but also provides the theoretic guidance to the acupoint selection, diagnosis and treatment of disorders in clinical practice.