Introduction: The aim of this study was to examine the effectiveness of social problem- solving group training on increasing the resiliency of mothers with addicted children.

Method: The research method had an experimental design with pretest – posttest and control group. The sample consisted of 40 mothers who had addicted children who were selected by random sampling and then the selected sample was assigned to experimental (20 mothers) and control (20 mothers) group randomly. The research tool was Conner and Davidson resilience scale. Finally the data was analyzed by single-factor analysis of covariance (ANCOVA).

Findings: The results of post test showed a significant statistical difference between experiential and control group on statistical on resiliency variable.

Discussion: The results of the study showed that social problem - solving group increases the resiliency of mothers with addicted children