This study was conducted to identify consumer's beef and pork demand system using consumer panel data of RDA. According to LA/AIDS analysis of beef and pork by region of origin, all parts of meat was significant in expenditure weight and elasticity. In addition, all of the items analyzed as having significant price elasticity were negative and classified according to the law of general demand. Alternative relationships were found in domestic beef tenderloin, strip loin and brisket, domestic beef shoulder and domestic pork hind foot, imported and other beef tenderloin, strip loin and imported and other pork ribs, domestic beef topround and imported and other pork forefoot. The purpose of this study is to provide information necessary for more rational production and consumption activities by grasping the substitution relationship between meat parts by estimating the demand system of each region of beef and pork origin. In addition, the identification of consumer demand by region and country of origin can also influence the systematic goal of raising livestock.