80 days baby 5 days without stool may be related to insufficient milk, congenital megacolon, etc., can increase the amount of milk, conservative treatment, surgical treatment and so on. 1. Insufficient milk: 80 days baby gastrointestinal tract power is poor, when the milk is insufficient, the amount of feces produced is insufficient, can not effectively stimulate the intestinal tract, and a few days without stool. At this time, parents should increase the amount of milk as needed to meet the normal physiological needs of the baby. 2. Congenital megacolon: If the baby is born with delayed discharge of fetal stool, often a few days to relieve a stool, be alert to congenital megacolon, which is a digestive malformation, because the rectum or the distal end of the colon intestinal tubes continue to spasm, fecal stagnation in the proximal colon, resulting in intestinal dilatation, hypertrophy. At this point, you should immediately go to the hospital and follow the doctor’s instructions for conservative treatment, surgical treatment and so on. It is recommended that 80-day-old babies who do not poop for 5 days should seek timely medical treatment and active treatment.