Breast cancer patients can be diagnosed through molybdenum target photography in the early stage, patients will show painless lumps, the surface of the lesion is not smooth, the boundary is not clear, the mobility is poor, and some patients will even show nipple overflow, and they should choose the surgical treatment in a timely manner after diagnosis, and the classic surgical method is modified radical mastectomy for breast cancer. For young female patients, radical mastectomy for breast cancer with breast preservation can also be chosen. After the operation, attention should also be paid to the prevention of infection, especially the trauma is relatively large, which is easy to be complicated by the formation of subcutaneous effusion, so it is necessary to open the trauma every day to change the medicine and apply localized compression bandage. One week after the operation, functional exercise of the shoulder joint of the affected side should be started to prevent periarthritis of the shoulder joint or scar tissue formation, which will affect the activities of the upper limb, and after the operation, intravenous chemotherapy or endocrine therapy should be chosen according to the needs of the disease.