Abstract:Objective To explore and analyze the clinical effect of Cangfu Daotan Decoction in the treatment of obesity-type polycystic ovary syndrome (PCOS) with phlegm-damp internal resistance syndrome. Methods A total of 120 obese PCOS patients with phlegm-humidity internal resistance syndrome admitted to Liaocheng Hospital of Traditional Chinese Medicine in Shandong Province from January 2019 to January 2021 were selected and they were divided into observation group and control group according to the random number table method, with 60 cases in each group. The control group was treated with Metformin Hydrochloride Enteric-coated Tablets, on the basis of the control group, the observation group was treated with Cangfu Daotan Decoction, both groups were treated for three months. The clinical efficacy, body mass index (BMI), glucose metabolism index, lipid metabolism index, and ovulation before and after treatment were compared between the two groups. Results The total effective rate and ovulation rate of the observation group were higher than those of the control group (P < 0.05). After treatment, the values of BMI, fasting insulin, fasting blood glucose, total cholesterol, triacylglycerol, and low density lipoprotein cholesterol in the two groups were lower than those before treatment, and observation group were lower than those in the control group, the high density lipoprotein cholesterol was increased than those befere treatment, and the observation group was higher than those in the control group (P < 0.05). Conclusion Cangfu Daotan Decoction in the treatment of obese PCOS with phlegm-damp internal resistance syndrome patients can have a good clinical effect, can effectively reduce the patient’s BMI value, adjust the glucose and lipid metabolism indicators, and can also promote and improve ovulation to a certain extent.