In Korea as in many other nations vasectomy as a male sterilization has become more popular as a method of planned parenthood. In this overview of male sterilization emphasis is on the mainly technical aspects of the ordinary vasectomy and vasovasostomy. Although the principle of vasectomy is the same, many different techniques have been reported and used. Specific differences are found in techniques for immobilizing the vas, for making the scrotal incision, for treating the cut ends of vasa, and for removing segments of vas. Attention is given to some important factors so as to provide complete protection against the passage of sperm without any failure and to improve the chances of later reversibility. The following aspects of ordinary vasectomy procedure are reviewed: ideal operative level, local anesthesia, immobilization of the vas, skin incision, isolation of the vas, treatment of the cut ends of vasa, prevention of hematoma formation, disappearance rate of residual sperm, immediate sterility technique, complications, psychological effects, and antibodies following vasectomy. In relation to vasovasostomy, numerous factors such as operative techniques, splint, various factors for the successful operation, overall success rates and low pregnancy rates are discussed and compared to this author's series.