Objective: The purpose of this study was to investigate the effect of social networks on marital relationship quality of life among couples of social network members in Shiraz in 2018. Methodology: For purposes of this research, this research was a applied and descriptive-correlative method. The statistical population of this study was all couples of social networking members in Shiraz. The sample was 425 individuals selected as sample size. Results: The instrument used in this research was researcher made marital relationship questionnaire and the quality of life and Sherborne to analyze the data, descriptive statistics (mean, standard deviation) and inferential (Pearson correlation coefficient) and SPSS software were used. Reliability of the questionnaires was 0.83 and 0.76, respectively, through the coefficient of kronbach's alpha coefficient. Conclusion: The findings of this study showed that the use of social networks has a significant effect on marital relationships and quality of life of couples in Shiraz.
