Modern medicine believes that there are cyclic rhythmic changes in pituitary-gonadal hormone levels at different stages of the menstrual cycle (follicular phase, ovulation, luteal phase, premenstrual phase) and corresponding cyclic changes in breast proliferation and rejuvenation. According to traditional Chinese medicine, the physiological changes of the breast during the menstrual cycle are pre-menstrual filling and post-menstrual drainage. The premenstrual period is characterized by sufficient Yin and Blood, Liver Qi is strong, and the Qi and Blood of the flushing gland is full, which is the physiological proliferation of the breast lobules. After the menstrual period, the blood is drained, the liver qi is relaxed, and the lobe of the breast is in a static state, so the lobe of the breast is proliferated and becomes old. Both modern medicine and traditional medicine believe that the occurrence of mammary gland hyperplasia is closely related to menstruation, and that treatment should follow the objective laws of physiological yin and yang, and that treatment should focus on each other. Before menstruation, Yin blood is injected into the flush, the liver loses nourishment, liver qi is easy to stagnate, siltation of blood is easy to knot, water and dampness are easy to become, wet and siltation of mutual obstruction of the standard evidence is most obvious in the pre-menstrual luteal phase, so the pre-menstrual emphasis on the treatment of symptoms, to move qi and blood, dampness and swelling. After the menstrual period, yin and blood leaking out, Chong Ren empty, should focus on treating the root cause, to strengthen the spleen and Qi, nourish the liver and blood, only to help the repair and recovery of the breast. The majority of patients in the clinic are confused with their medication, often applying two or even more drugs to promote blood circulation and eliminate blood stasis, and applying them in large doses for a long time.