Neonatal sepsis is a systemic infection caused by the invasion of bacteria into the circulation during the neonatal period, where they grow, multiply and produce toxins, and neonatal umbiliculitis is one of the main causes of neonatal sepsis. Umbilical cord infection is a soft tissue inflammation unique to newborns. As the immune function of newborns is not yet mature, once infected with bacteria, they are unable to effectively eliminate the bacteria and can easily spread and cause sepsis in newborns.