With the improvement of living standards, people’s awareness of disease prevention has increased, and for the consideration of eugenics, many people will voluntarily choose to do preconception tests to ensure the health of the new baby. The preconception examination of male partner mainly includes the following aspects 1. semen examination * semen routine: check the number + vitality of sperm * sperm morphology: check the degree of sperm malformation * sperm mixed agglutination antibody (MAR): check whether the male partner’s body has sperm-killing antibody * sperm acrosome enzyme assay: check the sperm fertilization function * seminal plasma elastase assay: check whether there is inflammation in the semen 2. urethral secretion examination Mycoplasma culture + drug sensitivity, chlamydia test, gonococcal smear test, gonococcal culture + drug sensitivity test: these are urethral pathogens, infection exists to affect the risk of sperm quality 3, blood test Blood type: maternity test during pregnancy need to know the blood type of the male partner to exclude the possibility of fetal hemolysis Pre-transfusion immune complete set: including hepatitis B, syphilis, HV test, for infectious diseases, before treatment is recommended contraception TORCH Virus test: TORCH virus infection can lead to miscarriage, malformation and other adverse pregnancy outcomes.