Objective: The purpose of the present research is to investigate the efficacy of group anger management training, utilizing cognit behavioral approach, on mother-child relationship. Method: The design of this study is quasi-experimental with pre and post test without control group. This study was conducted on 35 mothers volunteered to participate in this research. Workshops lasted 7 wee 2 hours weekly. Data were collected using Anger Evaluation Questionnaire (Zamani, 2007) and Multidimensional Anger Invent (Sigel, 1986). Mothers completed questionnaires at pre test, post test and 12 month follow-up. Results: Findings of repeated meas analysis of variance revealed significant differences in the factors of anger-eliciting situations, external anger expression, an arousal, and anger-in. Conclusion: In fact, after anger management training, parents showed significant reductions in the frequency provocations and the intensity of anger in anger eliciting situations related to their children. These changes were maintained over month follow-up. (C) 2010 Elsevier Ltd. All rights reserved.