Four-month-old babies poop green, this situation is mostly considered to be due to the baby indigestion, or abdominal cold caused by parents do not worry, to first observe the baby’s state of mind, milk, sleep, and the activities of the situation. If the spirit is normal, eating milk is normal, sleep is normal, this time can not need to intervene, do not give the baby to use any medication, this green diluted stool will improve on its own, it will change to the original color, the normal is yellow diluted stool or golden yellow diluted stool. If the baby in the green stool accompanied by poor mental state, refused to drink milk, or less speech, inactivity, sleep is not normal, then we should consider the intestinal problems, that is, there may be pathological changes in stools, parents need to carry the baby to the hospital in a timely manner, with the pediatrician to give examination and treatment.