1. Routine hematological examination: This examination not only can detect early whether the blood system diseases such as anemia, but also can measure the size of red blood cells, which can help to detect the carriers of thalassemia. If both partners are carriers of the same type of thalassemia, 1/4 of the offspring will have moderate to severe thalassemia, which will seriously affect the life of the offspring. This is a genetic disease that can be diagnosed prenatally. If necessary, the father-to-be should also be tested. In order to understand the risk of hemolysis in the fetus, the blood type test of both parties is also needed. 2.Urinary routine: It helps in the early diagnosis of kidney disorders. 10 months of pregnancy is a great test for the mother’s kidney system, and the increased metabolism of the body will increase the burden on the kidneys. 3.Liver function: If the mother is a hepatitis patient, pregnancy can cause consequences such as premature birth of the fetus, and the hepatitis virus can also be directly transmitted to the child. 4, infectious disease examination: including hepatitis B, hepatitis C, syphilis, AIDS. These infectious diseases may be transmitted through sexual transmission and intrauterine direct infection of the fetus, resulting in miscarriage and different degrees of fetal malformations. 5.Gynecological endocrine examination: to help understand ovarian function and ovulation. 6.Measurement of basal body temperature: Basal body temperature is the body temperature of a woman when she wakes up early in the morning before she is active. When ovulation begins, the body temperature rises sharply and mucus secretion is strong, indicating a good time for conception. Records for several consecutive months can detect the stability of ovulation. 7.Gynecological ultrasound examination: preliminary understanding of the reproductive organs closely related to fertility. 8.Gynecological inflammation examination: If you have sexually transmitted diseases such as mycoplasma, chlamydia, gonococcus, etc., it is better to treat them thoroughly before getting pregnant, otherwise it will cause miscarriage, premature birth and other dangers. 9. For women who have sexual life for more than two years, especially after 30 years old and without regular medical checkup, cervical cancer screening test is also necessary. 10. Couples of childbearing age with family history of recurrent miscarriage, stillbirth and genetic diseases also need to be checked for chromosomal abnormalities. 11.Folic acid metabolism disorder examination: it can guide personalized folic acid reasonable medication, which is important to prevent miscarriage and fetal malformation. 12.Deafness gene: Carrying rate of the population is about 6%. If both couples are homozygous deafness gene carriers, 1/4 of the offspring will be congenitally deaf. 13.Teratogenic five tests: including rubella, toxoplasmosis, cytomegalovirus, herpes simplex and B19 virus. Pregnant women are infected with teratogenic viruses in different stages of pregnancy, which can cause miscarriage and different degrees of fetal malformation. 14, teeth have a particularly important impact on pregnancy, especially when the mother-to-be’s teeth originally have caries and other problems, they should be repaired in time. Because the whole pregnancy, are not suitable to visit the dental, X-ray examination, anesthesia and painkillers, etc. will be detrimental to the fetus. Therefore, you should do an oral health care before pregnancy and have a dental cleaning to ensure the dental health to avoid future problems.