Children vomiting, diarrhea, fever may be caused by acute gastroenteritis, gastrointestinal colds, patients should consult a doctor in a timely manner, clear cause of treatment. 1. Acute gastroenteritis: If the child has a history of unclean diet before diarrhea, it should be considered acute gastroenteritis caused by the child vomiting diarrhea and fever, the situation is serious, the child may also be dehydrated and other symptoms. 2. gastrointestinal cold: children vomit diarrhea fever may also be caused by gastrointestinal cold, the patient will also have a loss of appetite, nasal congestion and other symptoms, the patient should drink a lot of hot water, if necessary, the use of ribavirin treatment. Children vomiting, diarrhea, fever may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.