Babies have mucus stool common causes are the following: 1, infancy gastrointestinal tract function is weak, often appear in the intolerance of food, some children due to the lack of a certain enzyme or more sensitive to chemical substances, bloating, diarrhea, mucus stool, such as allergies to lactose, protein, seafood, and even hives, etc., can choose less lactose or less protein formula feeding, as the baby grows older will slowly Improve, if it is a certain food allergy, try to avoid eating; 2, viral or bacterial infection of enteritis, in addition to mucus stool or pus and blood stool in the stool, but also accompanied by other symptoms of infection, and even dehydration. The baby’s stool specimens should be taken to the hospital for testing, and then the cause should be treated accordingly.