If metastasis occurs 12 years after breast cancer surgery, you should go to the hospital in time and standardize the treatment under the doctor’s guidance, and the treatment plan includes surgery, radiotherapy, chemotherapy, targeted therapy and daily care. 1. Surgery: If the metastasis is single and causes obvious peripheral compression symptoms, resulting in functional abnormality, local excision can be carried out through surgery. 2. Radiotherapy: through local radiotherapy to the lesion, further control the development of the lesion and reduce clinical symptoms. 3. Chemotherapy: standardized application of chemotherapeutic drugs is needed for control, and commonly used chemotherapeutic drugs include cisplatin and so on. 4. Targeted therapy: for patients with gene mutation, targeted drugs can be applied to control, such as trastuzumab. 5. Daily care: usually, we should pay attention to adjusting diet, matching nutrition, paying attention to supplementing essence protein, avoiding too stimulating and greasy food, paying attention to appropriate outdoor activities, and enhancing physical quality. When breast cancer metastasis occurs, it is necessary to consult the doctor in time and carry out standardized treatment under the guidance of clinicians.