Newborn babies often spit up milk because their stomachs are horizontal and they tend to swallow milk after lying down. Therefore, after your baby has had enough milk, it is recommended that you burp your baby sufficiently before putting him down. If your baby still spits up after burping, you can put your baby’s upper body about 30 degrees higher to reduce the spitting up. However, if your child spits up repeatedly and severely, and if your child’s weight gain is not satisfactory, you should be alert to the possibility of congenital pyloric stenosis. In this case, it is recommended to visit the hospital to improve the relevant tests to clarify the diagnosis. In this case, surgical treatment is required.