Babies pulling green stools, the common causes are as follows: a. caused by oral special milk powder, some babies due to allergic enteritis or protein allergy, taking amino acid formula, easily lead to green stools. Due to the protein depth or completely hydrolyzed milk powder, very easily absorbed through the intestines, excess digestive juices out of the body, inside the digestive enzymes are oxidized, so the stool appears green. Second, indigestion, infants with indigestion intestinal peristalsis is very fast, food in the intestinal tract for too short a time, the biliverdin in the digestive fluid bile can not be reduced to bilirubin, from the stool discharge, indigestion, thus the stool appears green. Third, infants affected by enteritis factors, will also appear green stool, need to do stool tests to clarify the cause of the disease, so targeted treatment. Some infants may have green stools due to lactose intolerance, which may be accompanied by sour odor or foamy conditions, and their stomachs often rumble. Five, for children with iron deficiency anemia, because parents give too much iron supplements, resulting in the iron in the formula is not fully absorbed, or iron is not fully absorbed, also easy to appear green stools.