A newborn’s failure to poop for three or four days may or may not be a normal phenomenon. 1. Normal phenomenon: especially for newborns who eat milk powder, the frequency of poop is relatively small, and the phenomenon of not pooping for three or four days may occur. If the newborn baby eats milk normally, the mental state is good, without any uncomfortable performance, mostly belong to the normal phenomenon. Parents can rub the child’s abdomen to encourage the newborn to defecate. 2. abnormal phenomenon: if the newborn three or four days do not poop, accompanied by reduced milk intake, poor mental state, or frequent crying phenomenon, most of the consideration for disease. You should be alert to the possibility of intestinal obstruction, congenital megacolon and other intestinal diseases. In this case, the child should be brought to the regular hospital as soon as possible, through further improvement of the relevant examination, diagnosis of the cause, give targeted treatment and adjustment. When a newborn baby does not poop for three or four days, parents should carefully observe the child’s daily status, if the status is not good, there are signs of discomfort, should take the child to the doctor as soon as possible.