Two months baby stool 8 times a day is a symptom of diarrhea, is not normal, causes of diarrhea include infectious factors, dietary factors, medication factors, climatic factors and so on. 1. Infectious factors: infection with bacteria, viruses, parasites, fungi, etc. may lead to symptoms of diarrhea. 2. Dietary factors: unhygienic diet may cause diarrhea. Congenital or secondary lactose intolerance may cause diarrhea due to poor digestion and absorption of lactose in the intestine. 3. Drug factors: unregulated use of drugs may lead to symptoms of diarrhea. 4. Climatic factors: sudden changes in climate lead to abdominal cold, resulting in increased intestinal peristalsis, may induce digestive disorders causing diarrhea symptoms. If the baby has uncomfortable symptoms, you should take the baby to the hospital in time to avoid delay or cause adverse reactions.