The child has a fever, want to vomit can not come out often fever caused by gastrointestinal disorders, fever during the body temperature will rise, resulting in reduced secretion of digestive enzymes and reduced activity of the symptoms of indigestion, easy to appear want to vomit performance, common methods are as follows: 1, you can eat montelukast to protect the gastric mucosa. 2, the use of afternoon tea granules, anti-cough granules or seven star tea granules to promote digestion, on the relief of the phenomenon of vomiting is also better. 3, for the case of fever, if the temperature is relatively high, more than 38.5 degrees, you should use antipyretic drugs for treatment, it is recommended to give the child oral ibuprofen suspension.