Constipation after breast cancer chemotherapy is caused by the damage to the small intestine mucosal cells caused by chemotherapy drugs or the anti-vomiting drugs used by doctors during the treatment that affect the dynamics of the small intestine. In daily life, patients only need to pay attention to the following points to solve the problem of bowel movement. First, exercise as much as physical strength allows; second, take honey water orally before bedtime and gently press the abdomen, and drink a glass of warm water in the morning; third, drink more water or juice during the day and eat more fruits and vegetables; fourth, develop the habit of defecation on time; fifth, if the above methods do not relieve constipation, inform the doctor promptly and let him/her choose some drugs to promote intestinal dynamics to stimulate defecation.