Purpose: This study was to analyze the effects of Guided Imagery Program on stress, stress coping, and health problem in high school students, and to detail applicable ways of Guided Imagery Program. Method: A study with quasi-experimental design was conducted from March 27, 2006 through April 21, 2006 with male students in the second grade of high school. 34 students in the experimental group (once a day the guided imagery program received group) and 32 control group remained for the final analysis. Data were analyzed using SPSS 12.0 program by χ2-test, t-test and paired t-test. Results: There was no significant group difference in stress, stress coping, and health problem. However, upper 30% group of imagery ability showed significant increase stress coping in 4weeks after pre-test compare to the control group. Conclusion: The results indicate that students who have high level imagery ability are more efficient to guided imagery program.