How to deal with the newborn’s large mouth jet spit up should first be clear whether it is physiological factors or pathological factors, if caused by physiological factors, need to improve the feeding mode that is vertical holding burp; if caused by pathological factors, then need to consult a doctor in a timely manner, to determine the cause of the targeted treatment. 1. Physiological factors Because the baby’s digestive system is not yet fully developed, if the feeding position is not right, or a single feeding too much may cause the baby to spit up. You can adjust the feeding position, do not lie down to breastfeed, and gently pat the back after feeding to promote the expulsion of air from the stomach. And each feeding should control the amount of milk, do not feed too much at a time. 2. Pathological factors Diseases of the central nervous system, such as hydrocephalus, meningitis, etc., can lead to increased intracranial pressure, thus causing projectile vomiting. There may also be digestive diseases such as pyloric obstruction, which can lead to increased pressure in the stomach, which will be manifested as projectile vomiting. You should go to the hospital immediately to clarify the cause of spitting up and make targeted treatment under the guidance of the doctor. Therefore, when your baby has jet spitting up, and if improving the feeding pattern does not alleviate the spitting up, parents should take your baby to the hospital to get a clear picture of the cause of the spitting up, and then treat the cause of the spitting up.