1.Female examination items 1.Blood test: TORCH, autoantibodies (anti-cardiolipin antibody, anti-ovarian antibody, anti-endometrial antibody, anti-sperm antibody), blood sedimentation, coagulation function, blood routine, blood type, hepatitis B (HBV), HCV (hepatitis C), HIV (AIDS), TP (syphilis), liver function, kidney function. 2, urine routine 3, chlamydia (CT), mycoplasma (UU). Gonococcus (NGH), white belt routine, pelvic ultrasound. Fallopian tube iodography, cervical cytology, anti-sperm antibodies in cervical secretions. 4.Electrocardiogram 2.Male partner examination items 1.Blood test: blood type, hepatitis B (HBV), HCV (hepatitis C), HIV (AIDS), TP (syphilis) 2.Semen routine and semen morphology (if semen routine or morphology abnormalities need to have recheck results), MAR, CT, UU, NGH.