Indications for AIH: ① Male factor: including oligospermia, weak spermia, poor semen liquefaction, retrograde ejaculation, etc. ② Cervical infertility: cervical stenosis, highly flexed uterus, abnormal cervical mucus, etc.; ③ Immunological infertility: such as presence of AsAb in cervical mucus and AsAb in seminal plasma; ④ Unexplained infertility. Contraindications to artificial insemination by husband (AIH) 1) Female partner has obstructed sperm-egg union due to tubal factors; 2) Female partner has genitourinary infections or sexually transmitted diseases; 3) Female partner has genetic diseases, serious physical diseases, psychosomatic disorders; 4) History of birth of babies with congenital defects confirmed to be due to female factor; 5) Female partner has been exposed to teratogenic amount of radiation, toxins, drugs and is in the effect period 6) the female partner has alcohol, drug and other bad habits.