The reason children are always nauseous is because: 1, improper feeding, children need nutrients at each month of age, can add supplemental food has strict rules, some parents are afraid that children lack of nutrition, vitamins, etc., in the not yet to add too much supplemental food or feed too much every day, etc., the child itself less digestive enzymes in the gastrointestinal tract, digestive capacity is weak, it is easy to accumulate food, thus appearing nausea. 2, gastrointestinal infections, children can easily induce gastrointestinal infections after the upper respiratory tract infection, resulting in irritation dry vomiting, nausea, etc. 3, the physiological structure of the gastrointestinal tract of children is relatively special, it is easy to appear after a full meal gastroesophageal reflux, stomach contents, gastric acid and other reflux to the esophagus, stimulation is easy to appear nausea. 4, food poisoning can also cause nausea in children, parents need to be alert .