Smelly stools in infants may be related to normal dietary habits, indigestion, gastrointestinal dysfunction, enteritis and so on. 1. Dietary habits: infants consume too much protein food, such as meat, milk, eggs, beans and other foods, due to the decomposition of protein in the intestinal tract, there will be infants with very smelly stools. 2. Indigestion: when babies suffer from indigestion, they will have smelly poop. 3. Gastrointestinal dysfunction: Since the development of the gastrointestinal function of infants is not yet perfect, catching a cold at night and eating too cold food will easily lead to gastrointestinal dysfunction of infants, which will result in smelly stools. 4. enteritis: certain germs or viruses, such as infant rotavirus infection, certain pathogenic bacteria, etc. lead to enteritis in infants, which will lead to the emergence of very smelly stools, diarrhea and other symptoms. There may be other reasons for smelly stools in infants, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.