The causes of green stools in newborns are mainly hunger green stools, eaten too much foremilk, iron absorption, indigestion, etc., as follows: 1, hunger green stools: insufficient breast milk or formula-fed babies do not add enough milk powder, because of hunger and lead to rapid gastrointestinal peristalsis, so that the intestinal bile chlorophyll has not been converted from the stool, most of the stool is green, stool volume, mucus. 2, eaten too much foremilk: if the baby eats too much foremilk, because lactose fermentation in the intestine also produces a lot of gas. 3, green foamy stool symptoms. The baby’s body is not only a good source of energy, but also a good source of energy. Too fast, food in the intestinal tract for a short period of time, so that the bile in the bile chlorophyll can not be reduced to bilirubin, from the stool, the stool will also appear green.