Artificial insemination (IUI) refers to centrifuging the husband's semen, removing the seminal plasma, concentrating the liquid of motile sperm, and injecting it into the patient's uterine cavity through a hose to help the patient get pregnant. It can reduce sperm motility or sperm debris after sperm washing, and improve sperm motility or anti prostaglandin antibody in semen; Direct injection into the uterine cavity can also avoid adverse factors such as antisperm antibodies in cervical mucus.

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Male factor

1. Mild or moderate oligospermia, asthenospermia and dysspermia;
2. Semen is not liquefied or poorly liquefied;
3. Severe hypospadias, retrograde ejaculation, impotence, premature diarrhea, stubborn non ejaculation;
4. Autoimmunity caused by infection and trauma.

Female factor

1. Cervical factors: abnormal cervical mucus caused by cervicitis, cervical polyps, cervical fibroids, cervical conization and electric ironing hinders sperm penetration;
2. Those with abnormal ovulation in natural cycle can try;
3. The woman produces antisperm antibodies that interfere with the operation and fertilization of sperm in the reproductive tract;
4. Infertile couples with unknown causes can try.