The purpose of this study is to determine whether the use of electroacupuncture to dredge and regulate Dai Meridian combined with lifestyle modification are more effective than lifestyle modification only in the treatment of anovulation and hyperandrogenism due to polycystic ovary syndrome (PCOS) with abdominal obesity.Two thirds of participants will receive electroacupuncture and lifestyle modification in combination, while the other one third will receive lifestyle modification only.