Objective: The present research was aimed to investigate the effect of positive group psychotherapy on reducing marital burnout among university political activists. Methods: The research was conducted by semi-experimental method. The statistical population of the present research included all married university students who were active in political groups of University of Tehran, Iran. The sample was composed of 20 political activists who were selected by purposeful and available sampling method among university political activists with inclusion criteria. The sample individuals were randomly assigned into experiment and control groups. Questionnaire was used gathering the required data. Results: The covariance analysis test was used for analyzing the data. Research results indicated that positive group psychotherapy is effective on reducing marital burnout in political activists (p > 0.01). Results show that the individuals’ capacity and ability to change their attitude towards themselves, life and environmental events are effective on reducing physical burnout, emotional burnout, and mental burnout, and positive thinking plays an important role in adjusting with stressful life events. Conclusion: Overall, with a review of the results of the present research, it can be said that, according to the effect of positive group psychotherapy on this variable in married university political activists, it is better that special trainings for these couples and preventive actions would be considered. Therefore, these methods of psychotherapy can be of great help in providing better support and more appropriate treatment for this specific population.