Jet vomiting is commonly caused by two major problems, including neurological problems and digestive system problems, as follows: First, neurological problems: such as intracranial tumors, intracranial infections and cerebral hemorrhage can occur with elevated intracranial pressure, while headache, dizziness, nausea, vomiting, mostly jet vomiting, due to elevated intracranial pressure, which should be immediately combined with CT or MRI of the skull and brain, cerebrospinal fluid examination to clarify The diagnosis should be immediately combined with cranial CT or MRI, cerebrospinal fluid examination to clarify the diagnosis and give the corresponding treatment immediately. Second, digestive system problems: the presence of gastrointestinal obstruction, such as acute gastritis, pyloric obstruction, gastrointestinal malformation, high intestinal obstruction, etc., due to the inhibition of downward emptying of the gastrointestinal tract, the contents of the gastrointestinal tract can not be excreted normally, causing local obstruction, the emergence of violent vomiting symptoms. In short, the symptoms of jet vomiting are more serious and the condition is quite serious, which should be taken seriously and the cause needs to be further clarified and early medical consultation is needed to avoid delaying the condition.