Cephalosporins are not recommended for patients with gastroenteritis. There are many clinical causes of gastroenteritis. If antibiotics such as cephalosporins are taken blindly, they may aggravate diarrhea or promote the development of drug resistance. Antibiotics can only be used in the presence of certain pathogenic infections, such as Campylobacter, Shigella, and Vibrio cholerae, and the use of antibiotics can be precisely applied by empirical drug use or drug sensitivity testing of sensitive drugs. For gastroenteritis caused by viral infection antibiotics are not effective, the treatment of gastroenteritis is mainly fasting, correction of water-electrolyte disorders, rehydration, etc.