Objectives: This study aimed to clarify the relationship between their breakfast habit and the related health determinant factors among newly employed soldiers of the Japan Grand Self - Defense Forces (JGSDF). Methods: Between December 2012 and January 2013, we conducted self-administered questionnaire survey on 256 samples of the above-mentioned JGSDF privates employed in Hokkaido. Analysis was, thereafter, performed with a focus to 234 male respondents. Results: Regarding the habit in meals, the rate in skipping breakfast among respondents was found to be 39.6%. Some important characteristics related to life style and personal background were detected in the respondents, who do not regularly have breakfast. Those were 01…Smoking habit, 02.…Short sleep, 03…Work-life imbalance, 04…Habit of overeating, 05…Lack of mental support by there family, 06…High score in CES-D, 07…Low score in SOC. Conclusion: Skipping breakfast was related to lifestyle and mental health in newly registered JGSDF soldiers. Compared with other habits, habit related to breakfast was found to be a determinant factor for good health. In addition, suggest the possibility that good relationship with there family in have a habit of eating breakfast.