During chemotherapy for breast cancer, attention should be paid to reviewing blood routine, liver and kidney function on time; maintaining good nutritional status; avoiding infection; and exercising appropriately. Chemotherapeutic drugs often have side effects, the more common ones are bone marrow inhibition and liver and kidney function damage, patients need to test blood routine and liver and kidney function regularly, and deal with the adverse reactions in time. Chemotherapy drugs often affect the function of the gastrointestinal tract, affecting the patient’s appetite, we should pay attention to supplemental nutrients, intake of appropriate amount of high-quality protein, fresh fruits and vegetables, to maintain nutritional balance. During chemotherapy patients with poor immune function, need to avoid infections, such as respiratory infections, diarrhea, urinary tract infections, etc., pay attention to maintain good hygiene habits. Patients in good condition, you can exercise properly, such as walking, helps to improve immunity.