A child’s nausea may be related to improper diet, abnormal digestive function, gastrointestinal infections, neurological diseases and other factors. 1. Improper diet: if the child does not pay attention to the diet, overeating, and like to eat spicy and stimulating food, will stimulate the child’s stomach, nausea. 2. Abnormal digestive function: If the child has recently been infected with bronchitis, pneumonia, etc., accompanied by fever, nausea and other adverse reactions. 3. Gastrointestinal infections: Reflexive vomiting may be caused by irritation from enteritis, appendicitis, gastritis and other diseases. 4. Neurological disorders: Neurological disorders such as encephalitis and meningitis may also cause nausea and vomiting. Children always have a bout of nausea, there may be other reasons, it is recommended to go to the hospital in time for relevant examinations, clear causes and then actively treat the symptoms.