No sperm in seminal fluid is called azoospermia, which can be divided into two types: occlusive and non-occlusive. In either case, we could extract sperms within epididymis or testis by using fine needle, and then realize egg-sperm binding through Intracytoplasmic Sperm Injection. With Dr. Hung-Chi Chang’s long-term experience and technical skills, sperm extraction surgery which only needs local anesthesia has small burden on the body and can discharge after a rest of a few hours.