This study aimed to provide fundamental information which could be helpful for clinical fields by examining the effects of craft activity-centered group art therapy program on ego-resilience of maladjusted adolescents. Twelve students of B middle school in A city are finally selected as the subjects of this study based on conducting school maladjusted scale. Craft activity-centered group art therapy program was conducted 60 minutes twice a week, total of 10 sessions. To examine the effects of program, U test of Mann-Whitney as a nonparametric and behavioral changes of each session were analyzed as a qualitative analysis to supplement statistical changes. To summarize the results of this study, first, ego-resilience score of experimental group that took craft activity-centered group art therapy program was increased compared to control group. Second, craft activity-centered group art therapy program showed positive influence to positive thinking, problem solving, intimacy behaviors and emotional regulations among five subcategories of ego-resilience. Therefore, it is supported that craft activity-centered group art therapy program influenced to increasing ego-resilience of maladjusted adolescents, and implied its application possibility in counseling and clinical field for school maladjusted students.