Parents need to closely observe the crying and mental state of their eight-month-old baby when he or she spits up milk in the form of jets. Mostly, it is considered to be caused by increased intracranial pressure, acute intestinal obstruction, acute gastroenteritis, etc. It is necessary to visit the hospital to clarify the cause before treatment. I. Central nervous system diseases: If there is meningitis, encephalitis, intracranial tumors, intracranial hemorrhage and other diseases, it will increase the intracranial pressure and lead to jet-like vomiting in eight-month-old babies. 1. Meningitis, encephalitis: accompanied by irritability, crying and even impaired consciousness, pupil changes, etc. Should promptly seek medical attention, under the guidance of a doctor to lower intracranial pressure treatment, such as the use of furosemide, mannitol, for different pathogens to choose the appropriate treatment, viral infections available acyclovir for antiviral treatment, bacterial infections more with ceftriaxone, cefotaxime and other antibiotic treatment; 2, intracranial tumors, intracranial hemorrhage: intracranial tumors, intracranial hemorrhage of children once the indications for surgery, should immediately undergo surgery Treatment, postoperative antibiotics can be applied to prevent infection. Second, digestive system diseases: acute intestinal obstruction, acute gastroenteritis and other gastrointestinal diseases may also lead to vomiting jet-like. 1, acute intestinal obstruction: eight-month-old baby in addition to occasional jet-like vomiting, but also accompanied by abdominal pain, anal stop defecation exhaust, abdominal distension and other symptoms. It is necessary to seek medical attention and improve the abdominal radiography to find out the cause of intestinal obstruction. Treatment requires medical advice to fasting water to reduce abdominal distension, can also be gastrointestinal decompression, bowel cleansing and other methods, if necessary, surgical treatment; 2, acute gastroenteritis: mostly due to eating unclean food, resulting in accelerated gastrointestinal peristalsis, causing acute gastroenteritis, manifested as occasional jet vomiting, for the stomach contents, also accompanied by abdominal pain, diarrhea, fever, abdominal distension and other symptoms. The stool routine and stool culture examination should be improved. In mild cases, it is necessary to pay more attention to rest and drink moderate amount of water. If there is no relief, it can be treated with belladonna tablets and montelukast.