The reason why babies poop when they are breastfed and are fine on formula may be the high content of prostaglandin E2 in breast milk. Breastfeeding babies have more stools per day, some 5 to 7 times, some even up to about 10 times, this situation is more common cause is due to pediatric gastrointestinal intolerance to protein caused by. Breast milk has a large amount of protein, if the pediatric gastrointestinal tract to protein intolerance, after eating milk will appear serious diarrhea. In addition, if the baby stools more often, but the amount of milk is normal, sleep, good mental state, normal weight gain, does not affect the normal growth and development of the baby, this is a normal physiological phenomenon. As the baby’s digestive system continues to develop and improve, the number of digestive enzymes in the intestinal tract increases, the ability to enhance the digestion of breast milk, this phenomenon will slowly disappear. If the baby ate breast milk on the pull, and accompanied by abdominal distension, abdominal pain, crying and other symptoms, to go to the hospital to find out the cause to give symptomatic treatment, so as not to miss the condition.