To explore the clinical efficacy posterior acupotomy method in treating anterior scalenus syndrome. Method: Anterior scalenus syndrome patients of 100 cases were randomly divided into three groups, according to the treatment methods, which were acupotomy, acupuncture, blockade respectively. The follow-ups were carried out on the date after a week, a month, three months of the treatment. According to the curative effect, the patients were divided into four types: cured, effective, valid and invalid; the curative rates and efficient rates of the two control groups (acupuncture group and blockade group) were compared according to the statistical analysis of the results to evaluate the acupotomys clinical efficacy in the treatment of anterior scalenus syndrome.Results:One week after the treatment, the acupotomy group was better than acupuncture group, curative effect of blockade and acupotomy group were also significant. A month and three months after treatment, the curative effect of acupotomy group was obviously better than acupuncture and the blockade group, as the curative effect of blockade group constantly declined.Conclusion:Acupotomy is an effective method in the treatment of scalene syndrome.