Infants have green stools, considering physiological factors or pathological factors, physiological factors such as fast bowel movement; pathological factors such as diarrhea, etc., can lead to infants with green stools. 1. Physiological factors: the color of the stool is related to the metabolism of bile, when the infant intestinal peristalsis is too fast, biliverdin can not be metabolized to bilirubin in the colon, so that the final stool color green; secondly, when the infant eats too many green vegetables or iron-rich foods, it will also make the stool become greenish. 2. Pathological factors: when infants have diarrhea, intestinal peristalsis is enhanced, so there will be green stools; in addition, there is lactose intolerance of infants after eating milk powder, there will also be green stools. Infants with green stool, there may be other reasons, it is recommended to go to the hospital in time, complete the examination to determine the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.