Green stools in infants may be normal if they are caused by breastfeeding or mixed feeding. If it is caused by pathological factors, treatment is needed. In breastfed babies, occasional stools that are slightly green, not smelly, and have a sour odor are normal and do not require treatment. If a mixed-feeding infant has a small amount of green stool, it may be due to the addition of other foods, and as the intestines gradually get used to it, the green stool will decrease and treatment is not necessary. If the diarrhea is caused by intestinal dysfunction or inflammation of the intestinal tract, it needs to be treated under the guidance of a doctor by taking Montelukast to stop diarrhea and Bacillus subtilis to regulate the intestinal flora. If the baby’s stools are green and not relieved or the baby’s weight growth is not up to standard, it is recommended to bring the baby to the hospital in time, under the guidance of the doctor, and actively cooperate with the treatment.