The baby eating milk powder green stools need to clarify the cause before considering whether to replace the milk powder, due to allergies caused by the ingredients should be replaced in time, due to iron caused by the need to replace. 1. component allergy: if the baby for the milk powder in the components of the existence of allergies, which leads to indigestion appeared green stools, should be replaced in time, this time to pay attention to abdominal warmth, avoid cold, so as not to aggravate the situation. 2. Iron causes: If the baby green stool is due to the formula contains a certain amount of iron causes, is a normal phenomenon, generally do not need to worry too much, mainly because the iron through the digestive tract and air contact will become dark green. Therefore, it is recommended that when the baby has green stools, he or she should go to the hospital for a detailed routine examination of the stools to determine the cause, and then choose whether to change the milk powder according to his or her actual situation.