Children’s physique is not yet fully developed, so inappropriate feeding methods can lead to many gastrointestinal diseases, if children appear nausea and vomiting phenomenon, it is likely due to the following several reasons: First, indigestion. Children’s digestive system is not fully developed, if you eat too much greasy or eat too much, will cause indigestion, indigestion will lead to the child’s gastric power is insufficient, thus producing the phenomenon of regurgitation. Second, gastrointestinal infection. If children eat unclean things, it is easy to lead to gastrointestinal infection, infection will cause stomach cramps, so that children produce a sense of vomiting, and accompanied by diarrhea and high fever phenomenon. Third, food poisoning. Slight food poisoning can also lead to nausea and vomiting, such as eating expired bread, milk, etc. In addition, if you eat too cold, too hot, too greasy food, may also lead to nausea and vomiting phenomenon. Finally, children’s physique is still relatively poor, especially the gastrointestinal function, basically not yet developed, so parents must pay attention to reasonable feeding when leading children, do not give children to eat unclean food, to avoid gastrointestinal disease.