Children vomiting in the middle of the night with a sour odor first of all to understand the cause of vomiting, may be associated with improper diet, abdominal cold and other reasons. You can temporarily do not eat, do not drink, to the gastrointestinal function recovery slowly eat light and easy to digest food, if necessary, with the appropriate medication. Children’s diet should choose clean and hygienic food, do not have to eat too much, do not have too much variety, to avoid causing indigestion in children. In general, after vomiting, the first temporary fasting, so that the gastrointestinal tract to fully rest, to restore normal peristalsis, and then slowly eat food, such as congee, rotten noodles and so on. If necessary, you can take oral bifidobacteria, bacillus subtilis and other probiotics to regulate the intestinal flora. Pay attention to hand and mouth hygiene to avoid cross-infection. If children vomit frequently in the middle of the night, they need to go to the hospital in time to identify the cause and give targeted treatment to avoid dehydration, electrolyte disorders, acidosis and other conditions.