Infant diarrhea and fever are usually related to gastrointestinal infections and milk protein allergy. 1. Gastrointestinal infections: for example, intestinal infections with bacteria, fungi, viruses, etc., stimulated by disease-causing microorganisms, easy to cause fever, fever, diarrhea, abdominal pain and other symptoms. 2. Milk protein allergy: If you are allergic to protein, it is easy to cause an allergic reaction after eating, resulting in fever, accompanied by diarrhea, itchy skin, rashes and other symptoms. Infant diarrhea fever, in addition to the above factors, may also be related to respiratory tract infections and other diseases. It is recommended to observe first, if the condition has been progressing and continues to show no improvement, it is recommended to consult a doctor in time and under the guidance of the doctor’s treatment.