The umbilical cord of a newborn baby usually falls off in about a week. After it falls off, normally there can be a little blood and ooze, so continue to disinfect it for 2-3 days, twice a day. When disinfecting, first soak it in hydrogen peroxide until it does not foam, and then wipe it with iodophor to disinfect it. After the stump is dry, there will be no problem. If the umbilical cord stump oozes more blood and fluid, and there is redness, swelling, heat and pain around it, be alert to the possibility of infection. The infection must be thoroughly disinfected, pay attention to local hygiene, and require antibiotic treatment if necessary. If there is persistent yellow fluid oozing, you must be alert to the possibility of unclosed umbilical ureter, and this condition requires surgical treatment. After the umbilical cord is dry, you must also pay attention to protecting the umbilical cord stump when bathing, you can use umbilical post for protection to avoid re-infection.