This study aims to develop concept of competitive korean restaurant which can react effectively in breakfast eating-out market which is growing as a new niche market as importance of health and breakfast recently rises under the influence of well-being. According to this study, importance of attributes was in order of menu(24.09%), price(22.02%). place(21.85%), size of restaurant(20.40%), and service(11.64%). Also, this study discovered that the new concept of korean restaurant(Jooks, 3,000 won, table service, residential street, 21~30 pyong) occupied a market share of 13.27%. According to the change in market share for each menu, market share was lowered in order of Jooks(-5.36%), Gookbobs(-4.45%), Jungsik(-3.48%). Such a result can be judged that same product eroded market share after being launched in pre-existing Jooks market.핵심용어(Key words):한식업소 컨셉(Concept of Korean restaurant), 아침외식산업시장(Breakfast foodservice market), 시장점유율(Market share), 컨조인트분석(Conjoint analysis)