I, vomiting is divided into “size” Here the size refers to the size of the age, the small age group is usually less than 3 months old baby, the possible causes of vomiting are the following: 1, food intolerance is what we usually call food allergies, that is, the baby’s body’s immune system overreaction to milk proteins and caused. Of course, not only milk proteins, but also other proteins or foods can easily cause allergies, which vary from person to person. Avoiding food allergens can make it go away. 2, deformities of the digestive tract See in the first month after birth repeated vomiting of small babies, can have gastrointestinal rotation, pyloric spasm or obstruction, intestinal atresia, etc., vomiting is usually violent, need to go to the hospital for further diagnosis and treatment. 3, improper feeding Feeding too much air, or vomiting caused by feeding position. The possible causes of vomiting in infants and children over 3 months of age are analyzed below. 2. Obstruction or not Obstructive intestinal vomiting in infancy can be due to congenital pyloric stenosis, delayed loss of the spout or spasm of the spout, intussusception and acquired intestinal torsion. Vomiting in childhood can be caused by extraintestinal wall compression, posterior adhesions of fetal fecal peritonitis, mesenteric hiatal hernia of the anterior duodenal portal vein, incarcerated inguinal hernia, or diaphragmatic hernia. Infection-related upper respiratory tract infections, pneumonia and gastrointestinal tract infections can lead to vomiting in children. IV. Vomiting caused by central nervous system diseases or vestibular dysfunction Various kinds of encephalitis, meningitis, cerebral hemorrhage, brain tumor and intracranial hypertension. Meniere’s syndrome. V. Nutritional and metabolic disorders, drugs and poisons stimulating the gastrointestinal tract. Infantile pediculosis, uremia, metabolic acidosis, diabetic ketosis. Misuse of drugs overdose, misuse of stimulating and corrosive poisons. Parents how to deal with: 1, the vomiting child should be taken to the side or seat, vomiting after cleaning the mouth. Observe for half an hour, if there is no vomiting, the child can be given a small amount of light salt water to drink. If you continue to vomit should be appropriate fasting 2-3 hours, repeat the above steps. Frequent vomiting needs to be sent to the hospital promptly. 2, with dehydration or electrolyte disorders, should be timely rehydration and correction of electrolyte disorders as needed. 3. After vomiting stops or is reduced, a small amount of slightly warm and easily digestible food or a liquid diet such as rice soup can be given.