Pre-treatment laboratory tests: male partner: chromosome, liver and kidney function, hepatitis B, hepatitis C, syphilis, AIDS, semen routine, semen mycoplasma, semen chlamydia. Female partner: chromosome, endocrine, blood routine, liver and kidney function, hepatitis B, hepatitis C, syphilis, AIDS, toxoplasmosis, rubella, cervical cancer smear, mycoplasma, chlamydia, electrocardiogram, breast examination. Documents to be prepared: Marriage certificate; ID cards of both parties; certificate of not having children or birth certificate (issued by the family planning office of the street or town or above).