The infant’s need for milk after jet spitting may be caused by gastroenteritis, central infection, congenital pyloric stenosis, etc., and the cause needs to be clarified and then targeted treatment. 1. Gastroenteritis caused by jet spitting, may also be accompanied by abdominal pain, bloating, diarrhea, dyspepsia and other symptoms, the need for short-term fasting, the need to actively prevent symptoms of dehydration, so that the child appropriate to drink more water or oral rehydration salts. If bacterial infection, according to the drug allergy oral antibacterial drugs such as cefixime. 2. Central infections may cause intracranial hypertension, resulting in projectile vomiting, temporary fasting, need to actively target the primary disease such as bacterial infections with antibiotics (eg, ceftriaxone, etc.), such as viral infections with antiviral drugs (eg, acyclovir, etc.) for anti-infective treatment, but also need to lower the cranial pressure of the treatment (eg, mannitol, etc.). 3. Congenital pyloric stenosis results in greatly reduced GI patency, and the child is prone to vomiting after eating, which may require fasting and possibly surgery. It is recommended that children with projectile vomiting seek medical attention as soon as possible to clarify the diagnosis and follow the doctor’s instructions for treatment. The above medications should be used in accordance with medical advice.