Breast cancer is one of the most common malignant tumors in women. According to statistics, the incidence of breast cancer accounts for 7- 10% of all kinds of malignant tumors in the whole body. Once breast cancer patients are diagnosed, they should be treated immediately as long as there is still an opportunity for surgery. Whether the operation itself is successful or not plays a key role in the prognosis of breast cancer. Scientific and standardized postoperative nursing care of breast cancer is helpful to monitor the changes of postoperative condition and deal with various problems in time. Moreover, postoperative nursing care of breast cancer can help patients recover their physical strength as soon as possible and effectively help patients improve their treatment effect. Postoperative nursing care of breast cancer can also effectively reduce the chances of various postoperative complications. First, the postoperative care of breast cancer patients should begin after operation. After the patient finished the operation and left the operating room safely, he began the postoperative nursing work. After operation, we should pay close attention to the changes of vital signs such as blood pressure, pulse, respiration and body temperature, and observe the bleeding and oozing of the surgical wound. Once problems are found, they should be handled properly in time. If there is low-grade fever and wound pain in the first few days after operation, it is usually caused by surgical trauma, which is a normal phenomenon and can be ignored or treated symptomatically. If there is high fever, and the wound is painful and accompanied by local exudation, it may be postoperative infection, and antibiotics should be used for treatment. If the postoperative situation is generally good, you can exercise properly, which is conducive to wound healing, reduce postoperative complications and return to normal life as soon as possible. In order to prevent lymphedema of the affected upper limb after operation, the affected upper limb should be lifted, abducted, rotated inside and outside, swung back and forth, left and right in time. Exercise should be gradual, not too hasty. Exercise should be done according to one's ability, not forced. Exercise needs to be sustained, not intermittent. Second, psychological care plays an important role in postoperative care of breast cancer. In the postoperative care of breast cancer patients, we should also pay attention to psychological care. Most patients have lost one breast after operation, and the prognosis is unknown. The patient's mood can be imagined. We should pay attention to their emotional changes, enlighten and persuade them in time when they find abnormalities, and encourage patients to face the reality bravely. For sensitive patients, we should avoid analyzing the condition too much in front of them, so as not to arouse suspicion. Avoid all mental stimulation to patients, ensure their adequate sleep and good mental state, and overcome the disease with full fighting spirit. Three, breast cancer postoperative care should arrange the patient's diet reasonably. There is no special difference in diet between breast cancer patients and normal people except taking medicine during treatment or avoiding food according to doctor's advice because of the change of their condition. The following dietary suggestions can be used for reference by patients and their families. Diet should be combined with treatment: breast cancer patients should eat as much as possible before and after operation and supplement nutrition. Rich nutrition can promote the body to pass the operation smoothly, promote the healing of incision and restore health as soon as possible. During radiotherapy and chemotherapy, due to the adverse effects of treatment, patients' taste and appetite decrease, which may produce gastrointestinal reactions such as nausea and vomiting. At this time, patients should realize that this is only temporary pain to a certain extent, and consciously overcome these side effects with optimistic spirit and tenacious will, and insist on eating some digestible and nutritious food in moderation to ensure that the body can accept and complete various treatment plans on time. Diet should be moderate, but not excessive: Overnutrition and obesity have adverse effects on the occurrence and development of breast cancer. Therefore, in the long-term life of breast cancer patients after treatment, we should adhere to the principle of moderate diet and not overeating under the premise of ensuring nutritional needs. Recommended reading: Beijing Institute of Epilepsy, which hospital in Beijing is good for treating epilepsy, Changchun Eye Hospital, which hospital in Shijiazhuang is good for liver cirrhosis, how about condyloma acuminatum caused by vitiligo in Beijing, the top ten hospitals near Xinjiekou, the hospital near the space bridge, and the best hospital for treating Dayang.