 Polycystic ovary syndrome PCOS is a dysfunction of endocrine system of women of reproductive age. Approximately 5-10 women in China have this syndrome. Irregular menstruation oligomenorrhea or amenorrhea, hirsutism and obesity are the common clinical manifestations of PCOS. The aim of this study is to evaluate the efficacy of acupuncture in improving the menstrual frequency of PCOS patients who do not have fertility requirements. 