If your baby has mucus in the diarrhea, you should pay attention to the following aspects. 1, your baby may have a viral or bacterial infection, and after the infection, the mucous cells of the epithelium of your baby’s small intestine are shed, and thus mucus appears in the stool. 2, it may be simple indigestion, after your baby eats food, the gastrointestinal tract cannot digest the food completely, and thus mucus appears in the stool. The baby should be aware of the possibility of a combination of lactose intolerance or milk protein allergy, which can lead to this situation. The first thing you should do is to check your baby’s stool routine, occult blood, rotavirus, observe your child’s spirit, and if necessary, take oral probiotics.