Baby diarrhea after fever, may be associated with enteritis (such as norovirus enteritis) or inflammatory bowel disease (such as ulcerative colitis) and other diseases, diarrhea and fever can also occur in conjunction. 1. Enteritis: If the occurrence of norovirus enteritis, for the acute onset of the disease, there may be paroxysmal abdominal pain, nausea, vomiting and diarrhea and other first symptoms, but also systemic symptoms, such as fever, chills, headache and other manifestations. 2. Inflammatory bowel disease: such as ulcerative colitis, can be manifested as abdominal pain, abdominal distension and diarrhea, can discharge mucus or pus and blood stools, accompanied by anxiousness and heaviness (lower abdomen is uncomfortable, want to defecate, after defecation, there is a sense of incomplete defecation), but also with varying degrees of fever and a variety of extra-intestinal manifestations such as rashes, arthritis and so on. Baby diarrhea after fever may have other reasons, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, in accordance with the doctor’s instructions on the cause of the symptomatic treatment.