The premarital examination includes the examination of AIDS. In addition to the necessary normal physical examinations, including blood pressure, blood sugar, biochemistry, electrocardiogram, liver function, blood, urine and stool, other infectious diseases, including hepatitis B, hepatitis C, syphilis, gonorrhea and other infectious diseases, are also examined. Tests for hereditary diseases are also performed, and tests for reproductive organs are also performed for both men and women. The purpose of these tests is not only to actively prevent and treat some diseases, but also to ensure a happy life after marriage and to achieve the purpose of eugenics, which is very important for both men and women.