Pediatric diarrhea is a multifactorial and multipathogenic disease, mainly characterized by frequent stools and changes in stool characteristics, sometimes accompanied by fever and abdominal pain. For bacterial infections, antibiotics such as cephalexin should be given; for viral infections, oral rehydration should be given to prevent dehydration, and anti-viral drugs are generally not needed. The main diet is easy to digest such as porridge and noodle soup.