A newborn baby who eats a lot of milk but does not have bowel movements may have a diarrhea. The belly mostly occurs in the breastfeeding newborns, in the first few days of the month to two or three months of this time period, due to the newborn’s digestive ability of the perfect, for the breast milk can be fully digested, absorbed, and accordingly every day to produce less food residue, will not be enough to stimulate the formation of rectal defecation, appeared to be more milk, but can be several days in a row, or even more than a dozen days of bowel movements. Although the newborn’s defecation time interval is prolonged, but does not affect the amount of milk, there is no abdominal distension, abdominal pain symptoms, defecation is very smooth, not accompanied by the phenomenon of dry stools, discharged is still a golden yellow paste, creamy stools, which is a normal physiological phenomenon. Parents are reminded that newborns who have a lot of milk without defecation, if the defecation is laborious, the stool is dry and hard, and usually love to cry, we should consult a doctor in time to find out the cause of the disease and give symptomatic treatment to improve the symptoms.