A questionnaire was conducted to exam and understand Junior college students' life style and health promotion behaviors and variables which influence their practices of these behaviors. One thousand and two hundred seventeen Junior college students across different grades from ten schools in southern Taiwan participated in this study. Results of this study showed that the mean score of health promotion behavior was 3.32. For measures of seven dimensions of health promotion behaviors, "no drinking and smoking" had the highest mean score which was followed by interpersonal supportive behavior, self-practice, stress management, and untrition in order. Two dimensions with lower mean scores were health reponsi- bility and exercise.