Baby breastfeeding foamy poop may be indigestion, lactose intolerance, gastrointestinal cold, etc., should be timely consultation to identify the cause. 1. Indigestion: If you give your baby too much to eat at once, it may cause intestinal accumulation of food, and the accumulation of food in the intestines is not digested, which will affect normal defecation, thus leading to breastfed babies with foamy stools. 2. Lactose intolerance: mainly because of lactose intolerance to breast milk, so breastfeeding the baby stool foam, try not to feed breast milk, you can use functional milk powder instead of breast milk. 3. gastrointestinal cold: with the night do not pay attention to keep warm, especially in winter, by the cold air attack, will lead to breastfeeding baby stool foam. If the baby breastfeeding foamy stool, parents are advised to take the baby to the hospital as soon as possible, by the doctor to clarify the cause of the disease, give targeted treatment.