1. Reasons for babies spitting up milk 1.1 Physiological reasons 1.2 Improper diet 1.3 Digestive problems It is a very common phenomenon for babies to spit up milk, but parents often feel very troubled. So, why do babies keep spitting up milk? 1. Reasons for babies spitting up milk 1.1 Physiological reasons: The digestion of newborns is not fully developed, the gastric emptying time is long, and the gastric capacity is small. This means that after the baby drinks milk, if