I. Preparation before chemotherapy for breast cancer 1. Pre-operative neoadjuvant chemotherapy patients should start chemotherapy as soon as possible after the diagnosis is confirmed by puncture biopsy; post-operative adjuvant chemotherapy should be started after recovery from surgery (wound healing, usually within 1 month after surgery); 2. Before chemotherapy for breast cancer, the patient’s height and weight must be measured to calculate the body surface area and decide the chemotherapy dose; 3. Before chemotherapy for breast cancer, it is generally recommended to perform large venous puncture – such as venous port – to establish Long-term venous access to reduce drug leakage and damage to tissues; 4. Patients with normal blood, heart, liver and kidney function tests before chemotherapy, or assessed by doctors whether chemotherapy can be administered. The commonly used chemotherapeutic drugs for breast cancer are: anthracyclines (A, such as epirubicin EPI, birubicin THP, etc.), paclitaxel (T, paclitaxel or doxorubicin), cyclophosphamide (C), fluorouracil (F), etc.; 2. 3, a cycle of chemotherapy is generally infused for 1 day, if the reaction is large, you can continue to infuse some drugs to reduce chemotherapy reaction and enhance the efficacy, patients should know which bottle is chemotherapy drugs and pay attention to drug reactions; 3, chemotherapy side effects and treatment 1, bone marrow suppression This is one of the most common and problematic side effects of chemotherapy for breast cancer, almost every patient will have bone marrow suppression The general rule is that the white blood cells start to drop on the 3rd-5th day after chemotherapy, and the extreme period is 7-10 days, after which they gradually rise again. At this time, serious complications such as infection will occur if not handled properly. We usually check the blood routine on days 4, 7 and 10, and use leukostimulants (granulocyte colony-stimulating factor) on days 5-8. Most patients need subcutaneous leukostimulants to get through the extreme phase of chemotherapy. Each person has a different pattern and should keep in mind the changing pattern of their own bone marrow suppression. Patients with fever or special weakness after chemotherapy should immediately check the blood picture and find a doctor for timely treatment; 2. Allergic reactions A few people with paclitaxel drugs may have serious allergic reactions, so pretreatment is necessary. 3. Other side reactions commonly include gastrointestinal reactions (nausea and vomiting), peripheral nerve damage, elevated transaminases, bone pain, etc., all of which are temporary. Hair loss will occur in many people, making patients distressed, but also temporary, after six months will grow new hair, some even better than the previous, so do not worry. Fourth, the patient precautions 1, during chemotherapy pay attention to strengthen nutrition, to easily absorb, protein vitamin enough, and eat more blood food such as pig liver, bone soup, etc.; 2, can eat some blood health products such as gum, red dates, etc., can also take oral blood, vitamin B4, etc.; 3, during chemotherapy due to decreased resistance to pay special attention to prevent colds, etc., to enhance warmth, in the 2-12 days of chemotherapy Day with a mask; 4, large intravenous care is a relatively troublesome thing, intravenous port is relatively convenient, chemotherapy interval without special care, should be at the nurse to understand the care situation.