Under normal circumstances, if there is also breast swelling and pain usually, it is essential to go to the hospital for an ultrasound to check if there is breast hyperplasia or any organic breast diseases. If organic diseases are excluded, premenstrual breast swelling and pain are generally considered clinically, and traditional Chinese medicine believes that the liver meridian accumulates in the breast. For example, patients who are prone to anger or have liver depression and qi stagnation may experience premenstrual breast swelling and pain. At this time, treatment can generally involve taking some liver-soothing and depression-relieving medicine, such as Xiao Yao Wan, Ru Ning tablets, and other medicines for symptomatic treatment. Occasional one or two instances are not a big problem, but if premenstrual breast swelling and pain occur frequently, it is definitely necessary to take medicine for symptomatic treatment, as this condition is generally related to liver meridian and liver depression qi stagnation.