A baby’s green poop may be caused by adding green supplemental food, being in a state of hunger or indigestion and other factors. 1. add green complementary food: general small children’s digestive system is not well developed, gastrointestinal function is relatively poor, if you add more green vegetables in the complementary food, may not be fully digested, thus appearing in the case of green stools. 2. In a hungry state: if the baby is in a hungry state, the intestinal peristalsis is relatively fast, may secrete a large amount of bile, excess bile with the stool discharge, thus appearing in the case of green poop. 3. Indigestion: The gastrointestinal function of the baby is relatively poor, if the consumption of cold, greasy, indigestible food, etc., may lead to indigestion, thus appearing green stools. There may be other reasons for your baby to have green stools, so we suggest that you go to the hospital in time to have a complete examination to determine the cause of the problem and then give targeted treatment under the guidance of the doctor.