The purpose of this research was to understand the effect of positive psychology group art therapy on married woman’s self-efficacy and psychological stability. The subject of the study was married woman in A city, and the program was conducted once a week, 120 minutes, and a total of 13 sessions. Research tools were self-efficacy and psychological stability scales and we did a pre and post comparative analysis. In addition, we conducted and analyzed using K-HTP tests before and after the each sessions and made a qualitative analysis of phased changes. The result were the following. Firstly, positive psychological group art therapy on married woman’s self-efficacy showed positive effect on self-efficacy and also showed positive changes on attitudes and child-care. Secondly, positive psychological group art therapy had a positive effect on the married woman’s psychological stability and showed satisfaction with life and positive emotions. Thirdly, after observing how positive psychology art therapy affects married woman's self-efficacy and psychological stability, we were able to see that there were a positive and independent life attitude in K-HTP tests and also less negative thinking in phased qualitative analysis due to her self-acceptance and self-control. Furthermore, we were able to see that she had been grown up by actively having interactions with other people. Therefore, this could be a further significance that the positive psychology group art therapy was effective on married woman’s self-efficacy and psychological stability.