Five-month-old baby 4 days did not poop is considered normal, may also have some relationship with constipation. 1. Normal situation, if the baby’s mental state is normal, diet is normal, four days without poop is generally considered normal, may be with the baby’s growth and development of the belly. 2. Constipation, if there are obvious symptoms of bloating, may be constipation, if often eat too much at once, drink less water, may lead to constipation symptoms. Five months baby 4 days did not poop, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause, under the guidance of the doctor to give targeted treatment or treatment.