Gastroenteritis occurs during breastfeeding, often manifested as abdominal pain, nausea, vomiting, discharge of thin paste-like stools, fever and other manifestations. Breastfeeding is a special period and care should be taken in the use of medication, and routine blood tests must be perfected. If there is a clear elevation of white blood cells and neutrophils, representing inflammatory infection, patients are advised to treat with antibiotics, because the infection has an impact on the fetus, so it must be treated with anti-infection, often choosing cephalosporin antibiotics, which are less damaging to the baby, in addition to anti-diarrheal drugs such as montelukast, and drugs that regulate the intestinal flora such as rectification.