Enlarged lymph nodes in the breast can be divided into benign and malignant enlargement. In this case, the cause should be actively sought and the severity should be judged by the presence or absence of other causes. If there are other causes, the cause should be determined and treated actively with regular medication and, if necessary, surgery. If there is no other cause, it is important to maintain a regular routine, avoid overwork and mood swings, and engage in appropriate physical exercise and sports.