1. What is baby indigestion? Baby indigestion refers to symptoms such as bloating, diarrhea, and constipation after eating. These symptoms may be caused by imperfect gastrointestinal function, improper eating habits, or other reasons. 2. What are the causes of indigestion in babies? 1. Imperfect gastrointestinal function: The intestines of newborns are not fully developed and are prone to indigestion. 2. Improper eating habits: such as overfeeding or overreliance on milk powder, etc.