Korea-U. S FTA has started from March 15, 2012. Korean cattle farmers should to enhance their competitiveness because the U. S beef industry is very big and strong. One big problem of Korean cattle farming is low self-sufficiency rate of forage. This is mainly caused by small size of cultivation land. But recently many paddies are not used fully because of rice surplus. In this paper we suggested the rice-plant forage as a counter measure of increasing domestic forage production. If the rice-plant forage is supplied to beef cattle by TMR (Total Mixed Ration) type, the nutrition value will increase. We also produce rice-plant two times per year by developing special variety for rice-plant forage. To encourage rice-plant forage production collaboration system between rice farms and cattle farms should be built as in case of Japan. Also it is desirable to operate Common TMR Supply Center in order to supply rice-plant forage to cattle farms efficiently in short time. Korean Native Cattle farms at Gangwon Province can strengthen their competitiveness by increasing rice-plant forage production.