This study focused on general education of national defense, civic consciousness and organizational citizenship behavior for high school and vocational high school students in Chiayi. Total of 644 questionnaires were sent, 630 valid questionnaires were obtained. The statistic method are including t-test, one way analysis of variance, Pearson product-moment correlation and stepwise multiple regression etc based on the general education of national defense attitude scale, civic consciousness scale and organizational citizenship behavior rating scale done by survey candidates. The conclusion of this study is as below: 1. The result showed the attitude of general education of national defense from high school and vocational high school students are over average. 2. The noticeable difference of the attitude of general education of national defense, depending on gender, grade, whether choose national defense general knowledge or not, students’ attribute, the educational system and apply for military schools or students of Volunteer Soldiers in the future. 3. We may see the highly positive correlation between the attitude of general education of national defense, civic consciousness and organizational citizenship behavior from high school and vocational high school students. 4. The attitude of general education of national defense has high predictability toward the organizational citizenship behavior and civic consciousness from high school and vocational high school students.