This study was to investigate fat content and fatty acid composition of 19 various fast-foods. Fat content per serving in double cheese burger was 38.8g, shrimpburger 27.5g, gogi-mandoo 26.3g, pizza 25.8g and chicken nuggets 18.8g, respectively. Fatty acid contained in fast-foods mostly were oleic acid, palmitic acid, linoleic acid and stearic acid. The ratio of P/S in yubu-chobab was 3.1/1, ccochinoodle 2.3/1, pork cutlet 2.3/1, bibimbab 1.5/1 and shrimpburger 1.3/1 when all the other tested fast-foods` P/S were less than 1. The ratio of P/M/S in ham cheese sandwich was 1/1/1, shrimpburger 1.3/1.5/1, bibimbab 1.5/1.5/1, which are similar to recommended 1∼1.5/1∼1.5/1. The ratio of ω6/ω3 fatty acids was found to be kimbab(34.0/1), chicken nuggets(25.3/1), ccochi noodle(20.0/1), yubu-chobab (16.5/1), fried chicken(16.3/1), chickenburger(12.6/1) and hot dog(10.2/1), which were higher than 10/1. Also pizza(3.5/1), spaghetti(3.7/1) were lower than 4/1. The rest of the fast-foods were within the range of 4/1∼10/1.