Diarrhea accompanied by fever, headache and other phenomena, may be related to the following diseases: First, acute gastroenteritis, acute gastroenteritis is mostly after eating unclean food, infected with Escherichia coli and other pathogenic bacteria, resulting in gastrointestinal flora disorders, acute diarrhea, fever and other symptoms, the need for antibiotics for treatment, if the fever is more serious need to take antipyretic drugs. Second, acute meningitis, this case is relatively rare, mainly in the meningitis virus epidemic areas infected by mosquito bites, the patient will also appear fever, headache, diarrhea and other symptoms, this disease is more urgent, need to be hospitalized in a timely manner infusion treatment to improve the symptoms. Third, acute peritonitis, usually suffer from gastric ulcer patients, if abdominal pain aggravation, fever, pain, etc., to consider is caused by acute peritonitis, need to be hospitalized to improve the abdominal ultrasound examination.