Frozen boar semen should be utilized in swine production in order to get its advantages. Much studies were carried out for the practical use of frozen semen. Some of frozen boar semen are used in swine production and some companies are exporting frozen boar semen in U.S.A.. For the practical utilization of frozen semen in swine production in Korea, we have to get deep knowledge and understanding about frozen boar semen and studies on processing and conception of frozen semen.