Green stools with a sour odor should be considered a sign of indigestion. This green, sour-smelling stool is related to the baby’s breastfeeding or the high fat content in the food. If the food is not sufficiently decomposed and absorbed in the gastrointestinal tract, a lot of excess ammonia will be produced, resulting in green, sour-smelling stools. Many factors can cause indigestion in children, such as cold, especially after the stomach is cold, or feeding too hungry or too full, sudden change of diet, adding supplementary food is not reasonable. Breastfed babies also have a great relationship with the mother’s diet, the mother’s diet is too greasy, or consume raw, cold, spicy food, etc. There are also some factors of infection, such as infection inside and outside the digestive tract. You need to pay attention to good eating habits, you can massage your baby’s abdomen in a clockwise direction, pay attention to keeping your abdomen warm to avoid getting cold, and you can also take probiotics in the right amount to regulate.