The newborn baby did not poop for two days is normal depending on the specific situation, may be due to insufficient breastfeeding, may also be due to gastrointestinal dysfunction. The majority of breastfed newborns have stools 1-4 times a day, golden yellow or yellow sticky, while artificially fed newborns can have a bowel movement once a day, slightly lighter in color than breastfeeding, and there are individual differences in the bowel habits of each baby. If a newborn does not have stool for two days, but eats milk normally, no bloating, crying, vomiting and other adverse reactions, or if the baby feels strong hunger, it may be due to too little breast milk, which is a normal phenomenon. If it is due to accumulation of food, parents can feed the baby probiotics to regulate the intestinal flora, as well as abdominal massage to help gastrointestinal peristalsis and promote bowel movement. If there is no bowel movement for two days, accompanied by refusal of food, crying, abdominal distension, vomiting and no exhaustion, the baby should be admitted to the hospital for examination to rule out meconium obstruction, necrotizing small intestine colitis, congenital megacolon and other diseases. Breastfeeding mothers need to pay attention to their own dietary regimen, with a light, nutritious diet, avoiding overly oily and spicy foods, getting plenty of rest, and maintaining a good state of mind to avoid adverse effects on the baby’s feeding.