Abstract: Objective To investigate the effect of ″Shuanggu Yitong″ acupuncture on weight， glucose，and lipid metabolism and menstruation of obese patients with polycystic ovary syndrome （PCOS）. Methods 65 obese PCOS patients were randomly divided into the observation group and the control group. The observation group was treated with ″shuanggu Yitong″ acupuncture + lifestyle management for 3 menstrual cycles，and the control group was given metformin orally + lifestyle management for 3 menstrual cycles. The changes in glucose and lipid metabolism（fasting glucose，insulin，HOMA-IR index，triglyceride）， body mass index（BMI），waist-hip ratio（WHR），and serum hormone levels（LH，T， E2，FSH） were compared between the two groups before and after treatment. Results The ″ Shuanggu Yitong″ group can reduce patients′ blood sugar，fasting insulin levels， HOMA-IR index，triglyceride levels，BMI，WHR levels（P < 0. 05），and serum LH， T，and E2 levels significantly reduced（P < 0. 01）. The efficacy in improving fasting blood sugar，insulin，triglycerides，BMI，WHR，LH，and E2 was better than that of the control group. Conclusion The ″ Shuanggu Yitong″ acupuncture method is more effective than metformin in treating obese PCOS and is worthy of promotion and application.

Key words: Shuanggu Yitong, polycystic ovary syndrome, obesity, acupuncture