The absence of stools is related to the age of the baby, the feeding situation, the addition of complementary foods, and the presence or absence of co-morbid symptoms that determine whether and how to treat. Babies not pooping does not necessarily mean functional constipation, but can also be seen as a physiological phenomenon. 1.Functional constipation: It is closely related to the maladaptive changes in the intestinal tract after the addition of complementary foods. Treatment: (1) You can adjust the diet and increase the amount of laxative fruits. (2) More pressure on the abdomen, do exhaustion exercises, soap bars to stimulate the child’s anus to promote defecation. (3) oral probiotic preparations, if necessary, enema, with oral lactulose oral liquid, wheat cellulose granules, four mill soup oral liquid, pediatric seven star tea granules, etc. (specific medication, face-to-face doctor’s opinion shall prevail). 2, save belly phenomenon: baby digestive ability to improve, to breast milk / milk powder can be fully digested, absorption, resulting in a daily food residue is very little, not enough to stimulate the rectum to form a bowel movement, the formation of baby does not poop. If the baby does not defecate and has no painful performance, do not deal with it. On the contrary, accompanied by flatulence, emotional irritability monk situation, can be handled in accordance with the functional constipation part of the approach. 3.Insufficient feeding: If the baby is not fed enough, he or she will also not defecate and needs to be fed more. It is a common phenomenon that the baby does not poop, as long as the baby has a good mental response, can eat milk, no abnormal crying that can not be easily soothed, there is no need to worry too much, according to the above methods can be dealt with, if necessary, hospital consultation.