It takes more than 9 months for clinical follicles to form sinus follicles, and a total of 85 days from sinus follicle development to mature follicles, which actually spans 3 menstrual cycles. Therefore, it usually takes 3 months for TCM to regulate menstruation to take effect. TCM practitioners often divide the menstrual cycle into 4 phases: menstrual phase, late menstrual phase, intermenstrual phase and premenstrual phase, i.e. luteal phase, according to the characteristics of the menstrual cycle rhythm and the changes of yin and yang, qi and blood in the body. According to the different physiological characteristics of each phase, the corresponding treatment plan is formulated. After the luteal phase, the main treatment is to tonify kidney yang and take into account kidney yin; during menstruation, blood circulation is activated and blood stasis is removed. For patients with polycystic ovary syndrome who have fertility needs, the aim of treatment is to regulate menstrual implantation. It is necessary to adjust body weight, lower androgen and insulin levels, and deal with metabolic problems so that the patient can conceive successfully and safely pass the pregnancy period.