It was conducted to evaluate the microbiological quality on the surface of slaughtered beef and pork products in Seoul from January 2003 to December 2003. Two hundreds four beefs and 284 pork carcasses were surveyed on generic E coli, total bacterial count for microbiological quality, and Salmonella spp as food-borne pathogen. The prevalence of the excellent or good grade(10$^4$ CFU/$ extrm{cm}^2$ in SPC) of beef and pork carcasses were 99.7% and 97.9%, respectively. The frequency of beef carcasses with less than 10$^2$ CFU/$ extrm{cm}^2$ of E coli was 100%, while that of pork carcasses was 98.2%. Salmonella spp was not recovered from all of beef and pork carcasses.