This research has been conducted against Cheong-Ju undergraduate students. A total of 213 questionnaires was used for the data. The first purpose of this research is to analyze eating habits of food-related lifestyle of the students. The second purpose is to classify them into groups depending on their food-related lifestyle. The third purpose of this research is to identify eating out behavior patters among the groups classified by food-related lifestyle. Based on the information obtained from those results, this study would help restaurants have their marketing strategies. From the factor analysis, 6 factors of "popular-oriented group", "health-oriented group", "safety-oriented group", "decoration-oriented group", "tasted-oriented group" and "wellbeing-oriented group" were extracted. Additionally, "safety type group", "passive food groups" and "high-interest in foods group" were classified from the cluster analysis.