The umbilical cord is the vital link between the fetus and the mother. The fetus receives nutrients from the mother through the umbilical cord, which has one umbilical artery and two umbilical veins, and the umbilical cord is cut at birth and ligated at the root of the umbilical cord. The causes of bleeding after the umbilical cord is dislodged in newborns are as follows: 1. At the time of ligation, the umbilical artery and vein are not well closed and bleeding or poor coagulation status occurs, i.e. bleeding caused by vitamin K deficiency, thrombocytopenia and low levels of coagulation factors. The bleeding can be stopped by washing with saline and then using iodophor or other hemostatic drugs such as Yunnan Baiyao. If the bleeding is large, you need to go to the hospital to find out the cause, and if surgery is needed, sutures are required. 2. Umbilical infection, if the umbilicus is found to be red and swollen, and there is pus in the umbilicus in addition to blood, the newborn needs to go to the hospital to remove the trauma, abscess cleaning and hemostasis, and systemic anti-infection treatment is also needed. Umbilical bleeding is a relatively common clinical phenomenon, and in most cases can be treated locally, which can also have a better clinical effect.