Prolonged green stools in babies do not necessarily cause harm. For example, green stools caused by dietary factors are usually harmless. If the green poop is caused by hunger or abdominal cold, it may cause abdominal pain, malnutrition and other hazards. In the case of formula-fed babies, prolonged consumption of iron-rich milk powder that is not fully absorbed may lead to prolonged green stools. Or has been added to the complementary food baby, supplemental food in a large number of long-term addition of green vegetables, may also lead to long-term green stools, these situations are normal phenomena, generally will not produce harm. If the baby is in a state of hunger for a long time, resulting in the body of bilirubin can not be converted into bilirubin caused by long-term green stools, this situation may cause some harm, for example, may cause the baby’s long-term nutritional intake is insufficient, resulting in malnutrition, the baby’s growth and development of the adverse effects. In addition, if the baby’s long-term green stools are caused by long-term cold in the abdomen, it can also cause some harm, such as causing abdominal pain symptoms. And long-term cold, resulting in increased intestinal peristalsis, may also cause diarrhea performance. Therefore, the baby long-term green stool, it is recommended that early medical treatment, give targeted treatment and regulation.