[Progresses of study on correlativity of qi-arrival of needling with clinical therapeutic effect and its action mechanism]

Arrival of qi, an important component of traditional theory of acupuncture and moxibustion, is the key factor in determining clinical therapeutic effect of acupuncture. The authors summarize the indication of qi-arrival, correlativity of qi-arrival with clinical therapeutic effect and its action mechanism through reviewing modern clinical research. At present, there is more subjective in the study on qi-arrival, so the key problem in research on qi-arrival is how the qi-arrival state is measured by an objective quantization standard. The cerebral function imaging, a new technique, may be used in objectification research on qi-arrival.