This study set out to quantitatively examine the influence of art practice on art therapy students' subjective well-being. A total of 158 Korean art therapy graduate students participated in the study, completing the Art Practice Scale and Concise Measure of Subjective Well-Being. Data were analyzed using descriptive statistics, correlation, and regression analyses. The analyses revealed positive interrelationships between art practice and subjective well-being. A comparison of the two sub-variables art competency and attitudes toward art work showed that actually engaging in art work is more important than having a positive attitude toward art. The study's implications highlight the importance of art practice in art therapy students' psychological happiness.