Male sperm are found in the male reproductive system, including the testes, epididymis and seminal vesicles. Sperm are initially produced by the testes, where the primary sperm cells are produced by the testes’ varicocele and transported to the epididymis. The epididymis is the organ of male sperm maturation. The primary sperm will stay in the epididymis for a period of time, and when it reaches maturity, it will be transported through the vas deferens to the seminal vesicles for storage. If a man has the urge to ejaculate during normal conjugal life, the physiological process of ejaculation will occur through the contraction of the seminal vesicles and the transport of the vas deferens. Therefore, male sperm are mainly found in the male seminal vesicles. In the case of primary sperm, it is mainly matured through the testes and epididymis and then reaches the seminal vesicles for storage.