The causes of Staphylococcus aureus infection in newborn babies may include umbilical cord infection, skin infection, etc., which requires prompt medical treatment. 1. The umbilical cord is tied when the baby is just born. If no attention is paid to the local sterilization of the umbilical cord, it will be easier for the staphylococcus aureus to enter into the body through the umbilical cord infection, and thus staphylococcus aureus infection will occur. 2. If the skin of a newborn baby is infected or broken, Staphylococcus aureus may enter the body through the broken skin, and Staphylococcus aureus infection may occur. Staphylococcus aureus infection in newborns may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.