Childhood diarrhea is a disease of the digestive system. If treated at a general hospital, the child should definitely see a pediatrician. If the diarrhea is severe, accompanied by moderate to severe dehydration, it is advisable to visit emergency pediatrics for urgent treatment. If going to a children's specialty hospital, it is recommended to see a gastroenterologist; severe cases can also go to emergency pediatrics. Additionally, if there is mucus, pus, or bloody stool, consider bacterial dysentery or other infectious diarrhea, and it is advised to see an infectious disease specialist. Generally, for ordinary diarrhea, it is advisable to visit a smaller hospital for treatment.