Permanent right umbilical vein refers to the fact that the right umbilical vein does not completely degenerate during the fetal growth and development, which is an anatomical variation that normally does not cause any adverse effects on the fetal growth and development. If a permanent right umbilical vein is found, it is necessary to go to the hospital on time for maternity checkups, to do all prenatal examinations and to observe the fetal growth and development. If the fetal growth and development are normal, there is no need to worry too much, the fetus will be no different from a normal baby after birth, so this condition does not need to be treated.