Chemotherapy is one of the most important systemic adjuvant treatments for breast cancer, and it can improve survival, reduce recurrence and mortality rates. How to correctly understand and respond to chemotherapy is crucial for breast cancer patients and their families. First of all, we should eliminate the tension and fear, change the extreme one-sided view of chemotherapy, and not refuse chemotherapy because of the fear of its side effects. Almost all chemotherapy drugs have toxic side effects, but it does not mean that all toxic side effects will occur in one person or in every chemotherapy treatment. Although most chemotherapy drugs have one or another toxic side effects, but as long as we correctly understand, in the process of chemotherapy to take positive measures, then we can safely through the chemotherapy period, receive good treatment results. Tactic one: psychological adjustment, stable and optimistic emotions can improve the tolerance of chemotherapy. Tactic two: dietary adjustment, a small number of meals, timely hydration. During chemotherapy to light and easy to digest low-fat, high-protein, vitamin-rich, calorie-rich diet, eat less sweets, do not eat fried food. If you do not eat enough or have severe vomiting and diarrhea, you should promptly communicate with your doctor and supplement glucose, saline and amino acids through infusion. Drink more water during chemotherapy, above 2500 ml per day, to speed up the excretion of drugs and metabolites and reduce toxicity to the kidneys. Trick 3: Chemotherapy can cause hair loss, so you can shave your hair before chemotherapy and buy a wig for backup. The biggest side effect during chemotherapy is the reduction of white blood cells, generally only after the white blood cells are normal before discharge, the reduction of white blood cells during chemotherapy may lead to fever and infection, so be sure to pay attention to avoid colds. Some chemotherapy drugs are more irritating to local blood vessels, and drug extravasation can lead to local tissue erosion, so deep vein placement, such as PICC placement, before chemotherapy is a wise choice to protect blood vessels.