Generally speaking, the premarital examination program includes three items: First, premarital medical examination. Including medical history, physical examination, and male and female genital organs examination, the purpose of this examination, if both of you have a medical history, the doctor will be based on your medical history, according to the obviousness of the disease so as to make a preliminary judgment for your future baby. This examination plays a very important role in the health of your future child. Second, auxiliary examination. This test includes routine blood test, chest X-ray, hepatitis B surface antigen test, urine routine, syphilis screening, mycobacteria test and so on. Third, other tests, such as HIV tests, chromosome tests, mammography, etc. Some of these tests are designed to prevent the spread of infectious diseases, such as AIDS, which is more than half of its spread is due to sexual transmission. In addition to this, professionals also explain some knowledge about premarital hygiene. Pre-marital examination is necessary: firstly, pre-marital medical examination can prevent the spread of infectious diseases and hereditary diseases, which is beneficial to the health of both parties and the next generation. Secondly, combined with the results of the physical examination, doctors can make a clear diagnosis of certain genetic defects and, based on the pattern of their transmission, project the degree of risk of affecting the eugenics of the next generation, thus helping the two parties to the marriage to formulate marriage and childbearing decisions, so as to minimize and avoid inappropriate marriages and the birth of genetically diseased children.