Currently, enterprise planning resources are highly regarded by government agencies due to capabilities such as process optimization, data integration, data access and business analysis as a standardized information system. Despite the great benefits of this system, due to its low experience and disregard for the risks associated with its deployment, most public sector organizations face many problems in ERP implementation, and in many cases even fail. This research attempts to prioritize the risks of ERP implementation in the public sector and to analyze the relationships between them. To this end, firstly, through the background of research and interviewing experts, the most important risks in this area were identified and then they were classified and categorized through the confirmatory factor analysis method. In order to prioritize the risks and analyze and interpret the relationship between them, the method used was the DEMATEL. The results show that the project and organizational risks in the first priority, the risks of users and managers in the second priority and the technical and software risks , communications, and consultant and observer ranked third.