A diarrhea temperature of 37.4, i.e., diarrhea with low-grade fever, may be associated with intestinal disorders, acute stages of inflammatory bowel disease, systemic infections, and other causes, and is not normal. Diarrhea is defined as an increase in the number of bowel movements, thin stool texture, or with mucus, pus and blood or undigested food. The normal body temperature of the human body is generally 36 to 37 ℃, body temperature 37.4 ℃ higher than the upper limit of the maximum value, indicating that there is fever, and belongs to the range of low fever. 1. Intestinal infections: such as viruses, fungi, bacteria and other pathogens caused by intestinal infections, patients will have diarrhea with fever. 2. Acute phase of inflammatory bowel disease: including ulcerative colitis, Crohn’s disease, etc., patients will have fever, mucopurulent blood stools, abdominal pain and other symptoms, fever is usually seen in the acute activity of moderate and severe patients, with low or moderate fever. 3. Systemic infections: such as sepsis, typhoid fever (fever caused by feeling cold), paratyphoid fever and other systemic infections, the patient in addition to diarrhea, fever, there will be a rash, headache, general malaise and other symptoms. There are many other causes of diarrhea with low-grade fever, so it is recommended to consult a doctor for timely treatment to avoid delaying the condition.