The odor of the newborn’s navel is mostly due to improper umbilical cord care resulting in neonatal umbilitis, mainly manifested as umbilical discharge with odor, redness, swelling, heat and pain, etc. If not treated in a timely manner, inflammation can spread to the surrounding skin, causing cellulitis or skin gangrene, etc. It can also cause serious complications such as sepsis and peritonitis, requiring good disinfection of the umbilical cord severed end, which can be done by disinfecting the umbilical cord stump and surrounding skin with 75% medical alcohol. Then cover with sterile gauze, keep it clean and dry, and consult with the neonatal surgery department if necessary.