Multiple breast nodules may be caused by breast cystic hyperplasia, plasma cell mastitis, local tumors and so on. 1. Breast cystic hyperplasia: when endocrine disorder occurs, it is easy to cause breast hyperplasia and incomplete recuperation, if not treated, it will cause multiple breast nodules, and it will be accompanied by breast swelling and pain at the same time. You can apply danazol, toremifene and other drugs to treat it. 2. Mastitis: When there is obstruction of the milk ducts, the discharge of milk or secretion will be blocked, which will result in changes in the epithelial cells of the milk ducts and the formation of nodules. You can use penicillin, cefoxitin and other drugs for anti-infection treatment. 3. Local tumor: when there is fibroma or breast multiple lipoma and other diseases, there will also be multiple breast nodules. The tumor can be removed surgically. Patients with multiple breast nodules are recommended to go to the hospital in time for consultation and standardized treatment according to the doctor’s instruction after the cause of the disease is clarified.