Baby pulling milk flaps and mucus, may be related to indigestion, may also be due to lactose intolerance, pediatric enteritis and other causes. 1. indigestion: for example, improper feeding, one-time to the baby too much milk, or frequent breastfeeding, beyond the baby’s gastrointestinal tract digestive capacity, resulting in indigestion, may cause the baby to pull the milk petals with mucus, may also be accompanied by abdominal distension, abdominal pain and other symptoms. 2. Lactose intolerance: due to the lack of lactase enzyme or insufficient secretion in the baby’s body, unable to digest and absorb the lactose in food, it may cause the pulling of milk petals and mucus, may also be accompanied by abdominal distension, diarrhea and other symptoms. 3. Pediatric enteritis: usually caused by climatic factors, unhygienic diet and other reasons. Due to intestinal infections, it may cause the symptoms of pulling milk petals and mucus, and may also be accompanied by abdominal pain, diarrhea and other symptoms. The baby pulls milk petals and mucus, may also be caused by other reasons, it is recommended to consult a doctor as soon as possible, after clarification of the cause, by the doctor to guide the treatment and adjustment.