With the improvement of quality of life, eugenics is now an issue of concern to the majority of women. Pre-conception check-ups are the key to ensure eugenics. At present, the items of pregnancy preparation examination include the following categories: i. Routine items. These routine tests include routine blood tests, blood type, coagulation function, liver function, kidney function, infectious diseases, AIDS and so on. The purpose of these tests is to screen the pregnant woman for any underlying diseases prior to pregnancy. If the test results are abnormal, then treatment needs to be given promptly. After treatment, the possibility of pregnancy is considered. If the test results are not abnormal, then the patient can be instructed to prepare for pregnancy. Second, pregnancy-related tests. These include the torch test and so on. The purpose of the test is to identify the presence of adverse factors in the patient’s body that affect the development of the fetus. If there are factors that cause acute fetal development, then the pregnancy is suspended for treatment. Finally, if the patient has a history of previous bad pregnancies, both partners should be seen and, if necessary, DNA tests should be performed on both partners to determine whether they can conceive. As mentioned above, there are many pregnancy preparation tests, and pregnant women are advised to undergo formal pregnancy preparation tests to achieve the goal of optimal fertility.