After the appearance of persistent right umbilical vein, it needs to be treated according to the condition of the fetus, there are several cases: first, if the persistent right umbilical vein exists independently and there are no other developmental abnormalities, there is no need to deal with it, usually you need to go to the hospital for further examination, so as not to affect the growth and development of the fetus; second, if after the appearance of persistent right umbilical vein, there is also fetal Secondly, if there is persistent right umbilical vein, and there is also abnormal development of the cardiovascular system or chromosomal abnormalities, it will have a direct impact on the growth and development of the fetus, and further chromosomal examination should be conducted to exclude other developmental abnormalities, and if there are other diseases or chromosomal abnormalities, it is necessary to consider terminating the pregnancy according to the specific situation, and it is better not to continue the pregnancy.