To explore the original connotation of acupoint concept, investigating specifically Neijing (Internal Canon of Medicine) and the excavated medical literature as well as the relevant works, the study was conducted in terms of the three aspects, i.e. the early titling and basic meaning of acupoint, the initial analysis on "shu" and the connotation of acupoint concept. It is believed that the relationship of acupoint with meridian tropism and qi as well as the application and indication reflect the acupoint specialty rather than its substantive characteristics. The substantive characteristics of acupoint should reflect the experienced specific site on the body surface in treatment, which are the foundation of acupoint regularity.
Keywords: Neijing (Internal Canon of Medicine); acupoint, concept; excavated medical literature; terminology.