One month baby a few days do not poop is considered to be the gastrointestinal tract is not fully developed, parents are advised to massage the child’s abdomen, appropriate water. May also be congenital megacolon, intestinal obstruction and other diseases, can take medication, surgery and other treatment measures. 1. Gastrointestinal tract is not fully developed: the gastrointestinal tract function of one-month-old babies is not fully developed, and there will be a change in the bowel pattern of the phenomenon. Parents are advised to gently massage the child’s abdomen to speed up gastrointestinal peristalsis, and to drink water appropriately. 2. congenital megacolon: for congenital megacolon caused by a month baby a few days not poop, parents can under the guidance of the doctor to the child to take lactulose oral solution and other lubricants, but also the use of Keseru, glycerin pessary and other anal plug drugs. Drug treatment is not effective when the child can also be surgical treatment, mainly to take enterostomy, radical surgery and other surgical methods. 3. intestinal obstruction: intestinal obstruction can also cause one month baby a few days without poop, mainly for surgical treatment, such as adhesion release surgery, intestinal resection anastomosis, intestinal short-circuit anastomosis and other surgical methods. The symptoms of one month baby not pooping for a few days, if it is caused by the incomplete development of the gastrointestinal tract, no special treatment is needed. In addition to the above diseases, it may also be caused by intestinal tuberculosis, intestinal stenosis, anorectal malformation, etc. Parents should bring their children to the doctor for treatment in time. The above drugs should be used according to the doctor’s prescription.