In the past, marriage examination was mandatory, but now it is voluntary. Marriage test is mainly to check the health condition of both parties and whether they can give birth to a healthy fetus in the future, which is of great significance for eugenics. Marriage test does not check whether there is any problem of previous abortion, which is a personal privacy issue, of course, experienced doctors can easily find out these problems, but in order to protect personal privacy, it will not be easily reflected in the report. The main purpose of the marriage test is to check whether there are any mental illnesses or hereditary diseases in the family, especially some diseases that affect the fetus, such as congenital deafness. It also checks for serious problems with the reproductive system, such as congenital absence of a uterus or problems with the prepuce or circumcision.