The causes of green stools in newborns are the following: First, breast-fed children have green stools, the color of the stool is closely related to the chemical changes in bile. The bile in the upper part of the small intestine contains bilirubin and biliverdin, making the stool yellowish green. When the stool is pushed to the colon, biliverdin is transformed into bilirubin after reduction, and this time the stool is yellow. Breastfed babies have acidic stools, and under the action of intestinal bacteria, part of the bilirubin is transformed into biliverdin, making the discharged stools light green, which is normal. If the baby eats milk well, the general condition of the normal, can not worry. Second, catching a cold. Children eat cold milk or children’s abdomen, feet cold, may lead to green stool, this is because after the cold intestinal peristalsis too fast, bilirubin can not be reduced to bilirubin, so will appear green. Third, hunger. Hunger will make the intestinal peristalsis accelerated, green stools, baby crying and restlessness due to hunger, this situation can be increased as long as the amount of milk.