It is possible for patients to take Xiao Jin Pills to make breast nodules disappear. Clinically, breast nodules are most commonly seen caused by cystic hyperplasia of the breast. Typical clinical manifestation of cystic hyperplasia is breast swelling and pain at the onset of the menstrual cycle, leading to the formation of lumps. After the menstrual cycle, the symptoms can be relieved and the lumps can shrink or disappear. For nodules caused by cystic hyperplasia of the breast, the use of proprietary Chinese medicines can be considered in clinical practice, including Xiao Jin Wan, Xiao Fen Xie, Xiao Dai Ling, and Yi Fang Wan, whose main mechanism of action is to dredge the liver, regulate qi, and activate meridians and collaterals, so as to bring about a balance in the body’s levels of oestrogen, progesterone, and prolactin, thus making the lumps disappear. It is necessary to be vigilant that breast nodules, in addition to being caused by cystic hyperplasia of the breast, also need to consider the possibility of breast tumors and malignant tumors, which generally require ultrasound comprehensive grading. If the grading is above grade 4, it is necessary to be alert to the possibility of malignant transformation, and it is necessary to do cytocentesis and pathological biopsy to exclude the possibility of malignant transformation, and when it is confirmed to be malignant, it is usually necessary to add the radical or modified radical treatment of breast cancer, and cooperate with the postoperative comprehensive treatment. Patients taking Xiaojin Wan may make breast nodules disappear, but only if they are caused by cystic hyperplasia, if they are tumor nodules, taking Xiaojin Wan cannot make them disappear.