The baby’s green stool is often caused by hunger, cold, indigestion, etc., and can be relieved by adjusting feeding methods and applying probiotics. 1, hunger: when the baby is hungry can stimulate gastrointestinal peristalsis, so that gastrointestinal peristalsis accelerates, bile secretion increases, resulting in green stool, thin stool. Breast-fed babies should pay attention to breastfeeding on demand, to ensure that the baby intake of sufficient milk to prevent the occurrence of hunger. Powdered and mixed feeding babies, parents should master the appropriate amount of milk and the number of feedings to reduce the occurrence of such phenomena; 2, cold: cold can stimulate the baby’s intestinal peristalsis to enhance, resulting in the bilirubin inside the intestines directly from the stool, oxidized into bilirubin, resulting in green stools, diarrhea. Daily life should pay attention to avoid cold, appropriate to increase the baby’s clothing, while avoiding low room temperature, pay attention to abdominal warmth; 3, indigestion: one month old baby’s digestive system is not yet well developed, it is easy to have indigestion, which leads to the stool in the intestines stay too long, the stool is green, diarrhea. If the baby is breastfed or mixed feeding, the mother should pay attention to a light diet and avoid intake of greasy, spicy and stimulating food. Probiotics can be properly given to the baby orally to regulate the intestinal flora; 4. Milk powder: If the baby is formula-fed with green stools and diarrhea, it is usually related to the milk powder. If the formula contains more iron, it cannot be completely digested and absorbed, and can be excreted with the food residue, and then appear green stool situation.