Infants with a little blood from the navel may be associated with vitamin K deficiency, umbilical cord detachment, umbilical cord infection, etc.. 1. Lack of vitamin K: Vitamin K deficiency can lead to a decrease in the activity of certain vitamin K-dependent coagulation factors in the body, vitamin K deficiency in infants, there will be bleeding from the umbilical cord. 2. Umbilical cord shedding: the navel cord is the link between the fetus and the placenta, the baby is born after the umbilical cord should be cut, in general, three days to a week the umbilical cord will happen to fall off. Umbilical cord shedding, local formation of granulation tissue oozing blood, which is a normal phenomenon. 3. Umbilical cord infection: Umbilical cord infection is usually caused by secondary skin infection due to inadequate care of the umbilical cord, local skin dryness and cleanliness, and incomplete disinfection. There are umbilical cord swelling, discharge, pus and accompanied by redness, umbilical cord bleeding and other symptoms. There may be other reasons for some blood coming out of the baby’s navel, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.