Baby green stool can be seen in the following situations: 1, baby did not eat enough: baby did not eat enough when hungry gastrointestinal tract peristalsis too fast, a lot of intestinal fluid plus bile and stool together, resulting in green stool, then you need to increase the amount of milk to ensure that the baby is full; 2, before and after milk intake imbalance, improper choice of milk powder: baby ate too much foremilk, foremilk because it is rich in lactose, lactose in the role of colonic bacteria to produce Acidic gas, these acidic gases may become foamy stool, but also can lead to intestinal flatulence symptoms. If artificially fed babies appear in this situation, appear for a period of time, it is possible that improper choice of milk powder, you can try to switch to another brand; 3, eat special formula milk powder: some babies after eating deeply hydrolyzed protein formula, or amino acid formula, the stool may appear dark green or even black, this is a normal phenomenon, without intervention; 4, excessive intake of iron: babies who eat fortified iron formula, or because of anemia in eating iron, part of the iron is not absorbed, will also make the stool green, this is normal; 5, diarrhea, watery green stool, baby intestinal peristalsis too fast, will make the nutrients did not have time to fully absorbed, there will be green watery stool; 6, intake of green food: baby add complementary foods, eat leafy greens, sometimes may also lead to green stool, this is a normal phenomenon, do not have too worry.