A. The following items should not be missed in the pre-pregnancy check-up for women: 1. Routine examination of the white belt: check whether there are trichomonas, mold, bacterial infections. If you are suffering from sexually transmitted diseases, it is best to treat them thoroughly before getting pregnant, otherwise it will cause miscarriage, premature birth, premature rupture of fetal membranes and other dangers. 2.Endocrine function test: It helps to detect ovarian diseases such as menstrual disorders. 3. Routine blood test: The purpose is to detect early whether there are blood system diseases such as anemia. If the mother is anemic, not only will there be complications such as postpartum bleeding and puerperal infections, but also the child will be prone to infections, reduced resistance and stunted growth. 4. Routine urine examination: It helps in the early diagnosis of kidney disorders. Ten months of pregnancy will increase the burden on the kidneys. If the kidneys have disorders, the consequences can be very serious. 5.Fecal examination: To know whether there are digestive system diseases, parasitic infections, etc.. For example, Toxoplasma gondii infection, if not detected early, can lead to miscarriage, fetal malformation and other serious consequences. 6, TORCH examination: refers to a group of pathogenic microorganisms (i.e. Toxoplasma gondii, cytomegalovirus, rubella virus, herpes simplex virus) This group of pathogens can often be transmitted to the fetus through the placenta, causing perinatal infection, resulting in miscarriage, stillbirth, premature birth, congenital malformations and mental retardation and other abnormal results. Second, the main items of male preconception examination are: 1. semen examination: check the semen volume, color, viscosity, liquefaction, PH value and sperm density, activity rate, morphology, etc., which can predict in advance whether the semen has vitality or whether it is less sperm or weak sperm. 2, male genitourinary system problems have a great impact on the health of the next generation. If a man has had mumps, cryptorchidism, testicular trauma and surgery, testicular pain and swelling, syringomyelia, banknotes are not everything and sometimes credit cards are needed. Hernia, urethral effusion, etc., it is more necessary to provide this information to the doctor. Third, when to start the preconception test? Preconception checkups also need to be done 3 to 6 months before pregnancy so that if abnormalities or problems unsuitable for pregnancy are found, they can be treated and corrected in time. In addition to the above pre-pregnancy checkups, it does not mean that 100% of them can rule out the occurrence of fetal malformations and other unexpected situations, but women need to do a comprehensive pregnancy checkup after pregnancy and take timely measures when abnormalities are found.