The purpose of this study was to examine the effects of the group art therapy program applying the motivation intensified counseling theory in teen smokers. The subjects were teen smokers attending G Middle School and K Middle School located in G city. The subjects consisted of 11 smokers for the experimental group and 10 smokers for the control group. A total of 12 sessions were conducted with the experimental group, with each session lasting 45 minutes. Smoking knowledge, smoking attitude, self-efficacy on smoking, urine cotinine, and expiration CO were measured to evaluate the effectiveness of the study. As a result, there was a significant difference with all showing changes in smoking knowledge, smoking attitude, self-efficacy on smoking, urine cotinine, and expiration CO. The results suggested a positive effect of the group art therapy program in applying motivation intensified counseling theory in teen smokers. Therefore, when there is a group art therapy program with motivation intensified counseling theory provided where teen smokers can be helped beyond school, it will contribute to healthy adolescent culture and improve the quality of life of teen smokers. Further group art therapy programs should be available that apply motivation intensified counseling theory to maintain a positive effect. Further research and long-term follow-up are necessary to support the smoking cessation for teen smokers.