The purpose of this study is to examine the effect of breakfast eating on learning attitude, academic efficacy and self-rated mental health. Survey was carried out with 460 subjects of the 5th grade elementary school student in Daejon area. The study subjects were divided into 3 groups with frequency of eating breakfast defined as an intake of 7 d/wk, 3-6 d/wk and 0-2 d/wk. The results are summarized as follows. The frequency of eating breakfast was 7 d/wk in 52.4%, 3-6 d/wk in 35.4% and 0-2 d/wk in 12.2% of the subjects. The most common pattern of breakfast was the traditional Korean style. The students who have breakfast every day(7 d/wk group) show better learning attitude and academic efficacy(p<.001) and positive on self-rated mental health while 3-6 d/wk and 0-2 d/wk groups were negative(p<.001). In conclusion, regular breakfast eating group shows better learning attitude, academic efficacy and self-rated mental health so that they have positive health status and academic achievement.