If a child has diarrhea accompanied by fever, it is generally considered to be infectious diarrhea, which includes both bacterial and viral infections. Common viral gastroenteritis is caused by rotavirus infection. Rotavirus infects the intestines, which can cause fever, vomiting, and diarrhea with frequent stooling, characterized by egg-flower or watery stools, and may also be accompanied by symptoms such as dry mouth and scanty urination. The treatment mainly focuses on fluid replenishment and symptomatic supportive care. There is also bacterial gastroenteritis, such as colitis caused by Escherichia coli infection and bacillary dysentery caused by Shigella infection, which can present with fever, diarrhea, abdominal pain, and bloody stools.