Children's diarrhea can be divided into viral diarrhea and bacterial enteritis. Viral diarrhea, most commonly rotavirus enteritis, follows a specific disease course, where most cases gradually recover after 5-7 days with rehydration and symptomatic treatment. If it is bacterial enteritis, effective anti-infection treatment with sensitive antibiotics can also control the symptoms within 5-7 days. Additionally, some diarrheas caused by bacterial dysentery generally require 7-14 days of treatment, and fungal enteritis also typically needs one to two weeks of treatment.