Newborns who poop after drinking milk can be divided into physiological and pathological conditions, and physiological conditions usually do not affect his sleep. For newborns who drink formula milk, pooping after drinking milk is a gastrocolic reflex. This is because when food enters the stomach, it stimulates the digestive system and causes defecation, which is mostly found in young babies. This is a normal phenomenon that does not cause discomfort to newborns. Parents should change the diaper of their newborns when they find out that they have pooped in a timely manner, so that the newborns are in a comfortable state and their sleep will not be affected. If a newborn baby poops after drinking milk, accompanied by crying, the stool is dilute and watery in nature, and the stool is frequent, more than 10 times a day, it is necessary to consult a doctor in time to find out the cause of the symptomatic treatment to improve the symptoms.