Green stools in infants can be normal or caused by indigestion, etc. 1. Normal phenomenon: breastfed babies, because breast milk will make the stool acidic, so that the bile inside the green color, so breastfed babies green stool, no mucus pus and blood, may be caused by normal factors. In addition, if the infant is taking amino acid milk powder or deeply hydrolyzed such special milk powder, the stool can also usually be green. 2. Indigestion: If the baby has green stools for a long time and there are milk petals in the stools, we should consider the possibility of indigestion. There may be other reasons for green stools in infants, so it is recommended to consult a doctor to find out the cause and treat the cause.