The present study examines the rate of marital conflict index in Iran by secondary analysis of national family survey data in Iran. The results of the Couples Conflict Rate Index in Iran indicate that 15.3% of the total number of married respondents have no conflict with their spouse، 40.7% have low conflict، 26.6% have moderate conflict and 17.5% have high conflict with their spouse. Married people have the least conflict over other issues related to conflict in the type of job and related issues. Among the issues of conflict between couples، the presence of the spouse on time at home with 22.1% and spending time with each other with 21.7، respectively، had the highest percentage of high conflict between couples. Among the existing solutions for resolving the conflict، referring to the judicial authorities and the court has the lowest rate among the solutions for resolving the couple’s conflict، so that (88.8%) of the respondents stated that they do not go to the court and the authorities to resolve the conflict with their spouse. In this regard، 76.5% use a lot of tolerance and 74.5% use a lot of dialogue to resolve the conflict with their spouse، which these two categories had the highest values among the conflict resolution solutions between couples.