The baby’s belly is a normal physiological process. “Save belly” is a folk saying, it is mainly manifested in the baby stool less often, the bowel law will be changed from the original 2 to 6 times a day to two or three days to defecate once, or even eight or nine days to defecate once, and during this period, the baby eating, sleeping normally, no obvious crying, weight gain is also normal, the stool color, shape is also normal! and constipation are fundamentally different. “Save belly” phenomenon is mainly due to the continuous development of the baby’s digestive system, the baby’s gastrointestinal digestive enzymes increase, intestinal peristalsis increased, and become regular, gastrointestinal absorption function than just born also has a great change in the digestive and absorption function to make the food residue becomes less, stools are also reduced, the formation of regular Regular bowel movements.