There is a difference between a baby’s tummy and constipation, one belongs to physiological phenomenon, one belongs to pathological manifestations. 1. save stomach: this is a common physiological phenomenon, mainly due to the gastrointestinal tract digestive capacity gradually strengthened, so the intestinal food will be well absorbed and digested, so the formation of food residue is too little, and then there will be a long period of time without defecation phenomenon. At this time, the baby is in good condition, normal diet, soft abdomen. 2. Constipation: constipation is a manifestation of gastrointestinal dysfunction, which is related to the fact that the child’s digestive function is not yet fully developed. At this time, the baby will not be able to pass stools smoothly, thus showing frequent crying symptoms, accompanied by abdominal pain and loss of appetite. If you can’t tell the difference on your own, you can go to the hospital and have a professional doctor identify it and give you targeted treatment.