The aim of this study was to explain marital satisfaction and mental health acording to coping styles in a sample of married students from the University of Tehran. An extensive analysis was performed to assess the kind of association among coping styles (problem-focused, positive emotional- focused, negative emotional-focused), marital satisfaction and mental health. Two hundred and seventy six students (138 couples) were included in this study. All participants were asked to complete the Coping Style Scale (CSS), Glombok- Rust Inventory of Marital State Questionnaire (GRIMS), and the Mental Health Inventory (MHI). Analysis of the data involved both descriptive and inferential statistics including means, standard deviations, Pearson's correlation coefficients, and regression analyses. The results revealed that effective coping styles including problem-focused and positive emotional-focused strategies were positively associated with marital satisfaction and psychological well-being, and
negatively associated with psychological distress. It was found that negative emotional-focused coping style as an
ineffective strategy was negatively associated with marital satisfaction and psychological well-being, and positively associated
with psychological distress. The results suggested that couples’ marital satisfaction and mental health could be
explained by different coping styles. Effective coping styles increase levels of marital satisfaction and psychological wellbeing,
while decreasing psychological distress. Ineffective coping style decreases marital satisfaction and mental health while increasing psychological distress.