Eating amino acid milk powder is dark green color may have something to do with the insufficient absorption of iron, indigestion and other reasons. 1. insufficient iron absorption: amino acid milk powder contains a certain amount of iron, if the baby can not fully digest iron, iron in the intestinal tract after oxidation will form dark green. 2. indigestion: the baby’s digestion, absorption ability is relatively weak, usually feeding too much is easy to increase the burden on the stomach and intestines, thus causing indigestion, not fully digested food is discharged, it will become dark green. If the baby eating amino acid milk powder appear dark green situation, and accompanied by other discomfort, it is recommended to go to the hospital for standardized treatment, so as not to delay the condition.