Green stools in 3-month-old babies may be caused by improper diet, indigestion and excessive gastrointestinal motility. If the general condition is good, without poor appetite, bloating and diarrhea, parents can adjust the baby’s diet and can continue to observe for 1-2 days. Persistent green stool or with other symptoms, you need to go to the hospital to determine the cause, and treatment of the cause. Common causes and treatment 1, dietary reasons: children eating iron-containing milk powder or other iron-containing food, if the iron can not be fully absorbed, the stool can appear yellow-green. In addition, when babies first add pureed vegetables and other complementary foods, the stool often excrete a small amount of green vegetable puree, which is also a normal phenomenon. If not accompanied by other symptoms, generally do not need special treatment; 2, indigestion: children with weak spleen and stomach, gastric insufficiency of indigestion, may lead to green stools, at this time can be under the guidance of doctors oral intestinal probiotics or digestive enzymes, such as bifidobacterium live capsule, stomach capsule, stomach tablets, multi-enzyme tablets, domperidone tablets and other drugs to relieve symptoms; 3, gastrointestinal motility too fast: due to intestinal inflammatory infection or wind and cold leading to accelerated peristalsis of the gastrointestinal tract. The bilirubin in the intestine is not yet converted from the stool, the stool will be green and thin. In addition, the stomach peristalsis is too fast, resulting in less consumption of bile during the digestion of fat, and the excess bile lipid is discharged from the stool, making the stool green. In this case, oral haloperidol, flavopiridol with domperidone tablets, vitamin B7, and multi-enzyme tablets can be taken under the guidance of a doctor to relieve intestinal inflammation. Attention should be paid to keeping the abdomen of the child warm in daily life to avoid getting cold or chilled. If the symptoms are more serious, you need to seek medical attention in time, parents should not deal with it by themselves to avoid delaying the disease.