Diarrhea in two-month-old babies is usually caused by lactose intolerance, indigestion or allergies. As the baby’s gastrointestinal tract function is poor, so after the symptoms appear, you need to seek medical treatment in time, symptomatic treatment, you can improve the symptoms of diarrhea by taking oral probiotics, adjusting the mother’s diet, etc. 1, lactose intolerance: some formula-fed babies are intolerant to lactose in milk powder, there will be symptoms of diarrhea, you can give the baby appropriate additional lactase to help break down lactose, can relieve the symptoms of diarrhea 2, indigestion: two-month-old baby intestinal flora has not been fully established, the gastrointestinal tract function is not perfect, will lead to the ingestion of breast milk or milk powder can not be digested properly, will produce diarrhea, you can take probiotics, adjust the intestinal flora, can also help the baby clockwise massage the abdomen, to promote intestinal peristalsis; 3, allergies: some babies are allergic to certain foods, although in eating breast milk, but if the mother consume foods that the baby is allergic to, such as eggs, milk, seafood, etc., can also be passed through the breast milk to the baby causing allergies, resulting in diarrhea. In the baby frequent diarrhea should go to the hospital for examination, if the diagnosis of food allergies, the mother needs to adjust their diet structure, reduce the consumption of such food during breastfeeding; 4, enteritis: a few babies will be infected by bacteria and viruses in the intestinal tract, resulting in intestinal inflammation, resulting in diarrhea, less severe symptoms can continue breastfeeding, more severe symptoms can be given montelukast, loperamide and other drugs The symptoms of diarrhea can be treated.