Umbilical velvet in newborns is usually not self-healing and needs to be treated as necessary. Umbilical velvet, also known as umbilical polyp, is a small amount of intestinal mucosal tissue that remains at the umbilical port after the yolk duct has closed. The umbilical polyp indicates that there is often a small amount of secretion, which can easily harbor bacteria. In general, umbilical polyp cannot heal itself, and if timely and appropriate treatment is not taken, infection around the umbilicus can easily occur and cause umbilitis. If the umbilical cord is large, it can be surgically removed or ligated with thread and fall off on its own; if the umbilical cord is small, the wound can be cauterized with 10% silver nitrate to promote wound healing. At the same time, after local treatment, it is also necessary to strengthen the periumbilical care by using disinfectant solutions such as hydrogen peroxide, iodophor and saline to keep the trauma clean and hygienic. In addition, care should be taken to keep the umbilicus dry during the recovery period, and water should only be applied after complete healing to avoid secondary infection.