Diarrhea in two-month-old babies may be due to improper feeding, gastrointestinal infections, lactose intolerance, etc. It is treated by probiotics, antidiarrheal drugs, lactase and so on. 1. Improper feeding: two-month-old babies gastrointestinal function is not well developed, babies drink too much milk at a time or eat too cold milk, may lead to gastrointestinal tract dysfunction, resulting in diarrhea symptoms, to be taken under the guidance of a doctor to take bacillus subtilis bacillus granules to regulate the intestinal flora, montelukast, etc. to reduce the number of diarrhea. 2. Gastrointestinal infection: every breastfeeding nipple or bottle is not sterilized, the baby contact unclean food gastrointestinal infection, triggered by abdominal pain, diarrhea and other symptoms of discomfort, bacterial infection caused by diarrhea, can be taken under the guidance of a doctor, antibacterial drugs such as cefixime granules, montelukast to reduce the symptoms. 3. Lactose intolerance: two months baby intolerance to some dairy products, diarrhea, bloating, increased exhaust and other cases of lactose intolerance, can be taken orally lactase to help digestion, reduce the symptoms of diarrhea. For two-month-old babies with severe diarrhea, it is recommended to consult a doctor in time to avoid dehydration. The above medications should be used under medical supervision.