Newborn babies do not poop for two days is usually a normal phenomenon, but we can not rule out indigestion and other abnormalities. 1. Normal phenomenon: newborn babies defecation mechanism is not yet mature, it is difficult to regular defecation, so sometimes there will be two days without poop phenomenon, generally if there are no other abnormal symptoms, do not worry too much, usually pay attention to feeding can be. 2. abnormal situation: newborn babies two days without poop, if there is abdominal distension and crying and other situations, usually belong to the abnormal phenomenon, may be caused by indigestion. The newborn baby did not poop for two days, there may also be other causes, it is recommended to go to the hospital, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.