Although it has the hope of cure in the early stage, there is still the possibility of recurrence after surgery. I. Patients should pay attention to functional exercise. Due to the large scope of breast cancer surgery, the local skin, subcutaneous fat, blood, nerves, lymphatic vessels and muscles will be damaged by different procedures, thus affecting the activities of the affected upper limbs and even the appearance of thoracic deformity. To prevent this, the most important thing is to perform functional exercise in time. Second, active treatment during the critical period of 1-3 years after surgery can effectively reduce the risk of recurrence. For patients, after breast cancer surgery, receiving systematic treatment and monitoring in regular hospitals is the key to prevent recurrence. Especially in the first 5 years after the primary breast cancer surgery, you should insist on the complete set of treatment in a regular hospital (preferably the original surgery hospital) as long as the condition allows, and then follow the medical advice for regular review. In the first six months after surgery, you should go to the hospital once a month for a review, and every three months after that. Avoid factors that promote the recurrence of breast cancer: do not smoke, do not drink alcohol, avoid using cosmetic products with high estrogen content, and avoid exposure to radioactive and electromagnetic radiation as much as possible. During the period when patients go home to recuperate between treatments, family members should make good arrangements according to patients’ physical condition and their response to treatment. If the patient’s body is very weak after surgery, coupled with the serious toxic side effects after radiotherapy and chemotherapy, bed rest should be the main focus, do not rush to get up first, the diet should be more easily digestible, to the patient’s taste, rich in various vitamins and trace elements of food, less greasy food; if the patient’s general condition after surgery is still good, but after radiotherapy and chemotherapy appeared bone marrow suppression, that is, a significant reduction in blood cells, should Avoid contact with patients with colds and flu to reduce the chance of various infections, and avoid trauma and bleeding tendency if platelets are significantly decreased; if patients have anorexia, nausea, vomiting and other gastrointestinal reactions after radiotherapy and chemotherapy, they should arrange to eat less and more meals, give light and tasty food, chew slowly when swallowing, do not lie down after meals, preferably in a semi-sitting position, and should not move immediately. Establish a scientific lifestyle: actively participate in physical exercise, maintain an optimistic mood and a good state of mind, develop a scientific diet, eat less high-fat, smoked and barbecued foods, and eat more vegetables and fruits, etc. Experts point out that the reason why breast cancer is prone to recurrence is directly related to its complex etiology. Nowadays, the direct cause of breast cancer is still unclear, and the direct cause of its recurrence is also unclear, so there is some difficulty in preventing its recurrence, that is, people do not know how it causes recurrence, and they cannot prevent its recurrence or block a certain part of its recurrence. Nevertheless, some factors with some relevance to breast cancer prognosis have been identified, such as age, clinical stage of breast cancer, lymph node metastasis status, hormone receptor status, etc., but these are usually non-anthropogenic factors.