Common causes of vomiting in 8 year old children include poor diet, colds, acute gastroenteritis, and acute appendicitis. Acute gastroenteritis caused by improper diet, colds and pathogenic infections are the more common causes of vomiting in children. Vomiting due to acute appendicitis, acute cholecystitis, acute pancreatitis, intestinal obstruction and other diseases is often accompanied by abdominal pain, diarrhea, fever, etc., or is accompanied by systemic manifestations such as generalized weakness and profuse sweating. In addition, the child immediately after eating strenuous exercise, is also easy to trigger the phenomenon of vomiting. Vomiting in 8-year-old children may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.