Abstract:Polycystic ovary syndrome (PCOS) is a common reproductive endocrine disease in gynecological clinic, which has brought a series of effects such as menstrual disorders, infertility, miscarriage, metabolic disorders, endometrial lesions, and depression to female patients. This article focuses on Professor Zhou Hua, the ninth generation of Cai's gynecology, who has many years of clinical experience in the treatment of PCOS. It is based on Cai's kidney-nourishing and menstrual cycle-regulating method, and“Cai's kidney-nourishing prescription”have flexibly used to treat PCOS infertility with the combination of traditional Chinese and western medicine, and has obtained satisfactory results in regulating the menstrual cycle and promoting fertility.