The reason for this is as follows: 1, the baby’s age is relatively small, the digestive system is not well developed, the spleen and stomach weakness or improper feeding will appear a little green stool phenomenon, should pay attention to the baby feeding to the right amount, do not feed too cold or too hot milk, should eat less and more meals. If the baby is breast-fed, the mother should pay attention to the diet can not eat too greasy, should give the baby more water, consume intestinal probiotics, wake up the spleen to raise children particles to help digestion. 2, cold, cold is also the main reason for the baby poop a little green, pay special attention to abdominal warmth, avoid getting cold, you can massage the abdomen clockwise. 3, the baby consume iron-containing milk powder or amino acid milk powder, may lead to a little green stool, for normal phenomenon. If there is mucus in the stool, you should pay attention to enteritis, you should go to the hospital for routine stool examination and give treatment.