Vomiting in three-year-old babies with food retention is mostly caused by improper feeding, and can usually be treated with general therapy and medication. Pediatric food retention is a disease that occurs when a child’s diet is improper and affects the digestive function so that the food stagnates in the stomach and intestines. If the baby has repeated vomiting, need to fast for about 4 hours, so that the gastrointestinal tract rest can be appropriate to feed warm water, no vomiting and then be a small amount of liquid diet. Can also be in the baby’s navel, clockwise gentle massage, to promote gastrointestinal motility, thereby alleviating the symptoms of indigestion. To follow the doctor’s prescription oral probiotics, such as bifidobacteria, lactobacillus, etc., to adjust the gastrointestinal flora, improve intestinal function, to relieve the accumulation of food and vomiting. If the vomiting is serious and damages the gastric mucosa, oral omeprazole, aluminum sulfate and other drugs can be taken under medical supervision.