The reason why newborn babies always spit up may be related to the structure of the stomach, or it may be caused by improper feeding position, indigestion and other reasons. 1. The structure of the stomach: newborns are prone to spitting up because their stomachs are in a horizontal position and the cardia opening of the stomach is relatively loose, so the stomach capacity is small. Especially when the amount of milk fed at one time is large, it is more likely to spit up. 2. Improper feeding position: If the newborn is lying down when feeding, it is easy to spit up after feeding. Attention should be paid to change the improper feeding position, so that the newborn is in a semi-recumbent state to eat milk, and timely burp after feeding. 3. indigestion: some parents are always afraid of newborns hungry, frequent breastfeeding to newborns, or a one-time to feed the child too much milk, may increase the burden on the digestive tract, resulting in indigestion, thus causing spitting phenomenon. Newborns always spit up may also be related to other factors, if accompanied by other obvious symptoms, it is recommended to seek medical attention as soon as possible, through the improvement of the relevant examination, diagnosis of the causal factors, to give targeted treatment.