摘要:The purpose of this study was to investigate the effectiveness of cognitive behavioral couple therapy on on Improving social well-being in couples with marital conflict. This study was a quasi-experimental study with pre-test and post-test with control group. The statistical population of this study included 160 couples with marital conflict referring to 4 counseling and psychology clinic in Tehran in 2018. The sample in this study was 32 couples with marital conflict referring to 4 counseling and psychology clinic in 2018 who were selected by cluster sampling and were divided into two experimental and control groups (16 couples for each group). Dyadic Adjustment Scale (Spanier, 1976) and social well-being (Keyes, 1998) questionnaire were used for data collection. Multivariate analysis of covariance (MANCOVA) was used for data analysis using SPSS-22 software. The results showed that cognitive-behavioral couple therapy had a significant effect on social integration, social coherence, social contribution, Social actualization and social acceptance (P <0.001). Based on these results, it can be said that cognitive-behavioral couple therapy, focusing on negative cognitions and their modification, leads to emotional and behavioral changes, which also affects their social well-being.