There are two kinds of azoospermia clinically: one is testicular failure, unable to produce sperm, no sperm on biopsy; the other is vasovaginal obstruction, no sperm on semen test, sperm on biopsy. These clinics need a lot of examination and physical examination to confirm, the treatment of the former type is meaningless; the latter type of medication has a 5% hope, and in the later stage, you can also collect sperm from the head of the epididymis to do in vitro; or vas deferens, epididymis docking and other surgeries.