Children vomiting yellow water may be caused by physiological reasons, acute enteritis, acute cholecystitis, etc. It can be relieved by general treatment, medication such as bifidobacteria, domperidone, etc., and surgical treatment. 1. Physiological reasons: If the child eats too much at one time, when he/she exercises vigorously after eating, it may trigger vomiting and spit out yellow stomach contents, which is a physiological phenomenon and does not need special treatment, and will be relieved after rest. 2. Acute enteritis: when the child suffers from acute enteritis, most of them are caused by the change of climate, unclean diet, overfeeding and so on, usually there will be abdominal pain, diarrhea, nausea, vomiting and other symptoms, if the condition is serious, the symptom of vomiting yellow water may occur. Under the guidance of the doctor can be relieved by bifidobacterium quadruple live bacterial granules, domperidone tablets, norfloxacin and other drugs. 3. Acute cholecystitis: If the child suffers from acute cholecystitis, it may be due to improper diet, eating high-fat food, etc., which will easily irritate the gastrointestinal tract and cause yellow water vomiting, accompanied by pain, abdominal distension, nausea and other symptoms. It can be treated by surgical methods under the guidance of doctors, such as open cholecystectomy and laparoscopic cholecystectomy. After the child vomits yellow water to rule out physiological causes, parents should take the child to the hospital in time, improve the examination to clarify the cause of the disease, the doctor will give the correct treatment.