Cold and hot is considered to be an abnormal feeling of the body during fever, while the presence of diarrhea is generally associated with infectious gastrointestinal diseases, usually caused by eating contaminated food and water. 1. Bacterial infectious enteritis: caused by a variety of bacteria, diarrhea, chills, high fever as the main manifestations of a group of infectious diseases, common bacteria are Escherichia coli, Campylobacter jejuni and Yersinia. 2. Viral gastroenteritis: caused by a variety of different viruses, abdominal pain, diarrhea, fever symptoms, common viruses are rotavirus, norovirus, intestinal adenovirus. 3. Acute bacillary dysentery: an acute intestinal infectious disease caused by dysentery bacillus, which is a special kind of bacterial infectious disease. Clinically, it is characterized by fever, abdominal pain, diarrhoea, acute and severe diarrhoea, and discharge of loose stools containing mucus, pus and blood. In addition to the above factors, there may be typhoid or paratyphoid fever, intestinal tuberculosis, Crohn’s disease, acute attack of ulcerative colitis, sepsis and so on. Which specific cause of diarrhea and fever, need to go to the hospital to find the cause of the disease, targeted treatment.