1. Causes of repeated diarrhea in babies 1.1 Infectious diarrhea Infectious diarrhea refers to intestinal infections caused by viruses, bacteria, parasites, etc. Common pathogens include norovirus, rotavirus, E. coli, etc. Babies may develop diarrhea, vomiting, fever and other symptoms after infection. 1.2 Improper diet: A baby\’s diet is too simple or unhygienic, which can easily lead to diarrhea. Eating too much raw, cold or expired food. 1.3 Allergic Reaction Babies may have allergic reactions to certain foods or drugs, causing diarrhea and other uncomfortable symptoms. 1.4 Other reasons such as intestinal dysfunction and imperfect digestive development