The GPA of the marriage test is an understanding of the woman’s fertility, mainly her maternal history, with G indicating the total number of pregnancies; P, the number of births; and A, the number of miscarriages. Marital examination is pre-marital examination, which is mainly to carry out routine physical examination and genital examination for men and women before marriage, and marital examination GPA is one of the examinations, which is mainly to carry out preliminary understanding of women’s fertility situation. The purpose of the marriage examination is to exclude some infectious diseases, genetic diseases and other diseases that are not conducive to marriage and childbearing, which is not only conducive to the health of both men and women, but also conducive to eugenics. It is recommended that the doctor be informed of past illnesses, family illnesses and the fertility of the woman during the marriage test, and the doctor will be able to give appropriate pre-marital guidance according to the health of the man and the woman.