One of the social issues that has become increasingly important and complex in recent years is the issue of divorce. The formation and spread of this issue lead to the collapse of the family institution and social and cultural disruption in society, leading to other social issues such as delinquency and social deviations from its consequences. Studying and acting to change such a situation or provide a solution requires sociological approaches. According to official statistics, across the country, divorce in 2011 compared to 2012, 8% in 2015, it has experienced 17% growth. Ilam province as a geographical boundary of this study is not excluded from having such conditions as the general conditions of the country. The present study, using a census method and secondary analysis of information, investigated the causes of divorce request and divorce among the couples of Ilam province. The statistical population of the study consisted of divorced couples in Ilam province from 2011 to 2015. Required information was also obtained through censuses and secondary analysis through the files available at the divorce reduction of Welfare Organization and Divorce Centers. The results showed that the most common causes of divorce were lack of moral understanding and economic problems. Among the research hypotheses, addiction history, educational level, family relationship, previous acquaintance and age of couples were confirmed which showed a significant relationship with the reason for divorce request.