Old vomiting in children can be divided into physiological and pathological, and pathological causes include digestive system diseases, neurological diseases and endocrine diseases. 1. Physiological: if the child is carsick, then often take the vehicle may be the cause of frequent vomiting; feeding too much food or feeding inappropriate way may also appear vomiting symptoms. This is a normal physiological phenomenon, eliminating triggers can be restored, without additional special treatment. 2. Pathological: children may suffer from digestive diseases, such as gastritis, enteritis and peptic ulcer, these diseases will cause reflex vomiting through gastrointestinal discomfort; meningitis and epilepsy and other neurological disorders can cause central nervous system damage leading to central vomiting; hyperthyroidism and uremia and other endocrine disorders can also cause vomiting symptoms. It is recommended that a child who vomits frequently should be seen by a physician for evaluation of the cause and treatment.