The Male Reproductive Medicine Department mainly investigates male fertility problems, including semen problems, problems of the reproductive organs, erection problems and chromosome problems. 1. Semen Problems: The quality of semen is mainly determined by laboratory tests, including semen liquefaction, sperm content, sperm vitality and deformity rate, etc. The quality of semen is also determined by ultrasound and physical examination. 2. Problems of reproductive organs: ultrasonography and physical examination are used to determine whether there are developmental malformations of reproductive organs, including testicles, epididymis, prostate, seminal vesicles and penis. 3. Erection problems: some male fertility disorders are related to erection, mainly through determining whether they are caused by mental factors or organic lesions, and through standardized treatment to improve erection and enhance the quality of coitus. 4. Chromosomal problems: some of the abnormal development of the reproductive system or abnormal sperm condition is related to the congenital chromosomal abnormality, by determining the chromosomal condition, to determine whether it is necessary to do sperm screening. Through the male reproductive examination to determine the condition of the male body indicators, found abnormal, under the guidance of the clinician for standardized treatment, the body to recover before preparing for pregnancy.