Whether or not to change the milk powder for the baby’s green poop needs to be decided according to the cause of the green poop, if it is only caused by cold and consuming milk powder containing iron, there is no need to change, if it is caused by allergy to protein, it is recommended to change the milk powder. 1. baby green poop more reasons, most of them are caused by cold, consumption of iron containing milk powder, these two reasons generally will not lead to the baby a long time green poop, the baby’s body does not have any harm, so do not need to change the milk powder. 2. If the baby pulls green stool, and the skin has a red rash, itching and other phenomena, may be allergic to the protein in the milk powder, is the need to replace the depth of hydrolyzed milk powder. If parents can not confirm whether the baby is allergic to milk powder, it is recommended to take the baby to the hospital for allergen examination.