[Progress of research on acupuncture at trigger point for myofascial pain syndrome]

To review the literature of acupuncture at trigger point for myofascial pain syndrome from the main selected points (trigger point), the mechanism of Chinese medicine and modern research and its clinical application. The results show that acupuncture at trigger point has significant effect on the myofascial pain syndrome, which could be influenced by the type of needle, manipulation, insertion angle and depth of the needles. However, the involved studies at present are still far from enough and lack of systematic study with multivariate analysis, it is needed to be improved that some problems about the clinical diagnosis and basic research.