The main issue of this research is the uncertainty of the benefits and cultural harms of virtual social networks for the employees of the Army of the Islamic Republic of Iran. The purpose of this study is to identify the cultural benefits and harms of virtual social networks among military personnel. The main research question is: What are the advantages and disadvantages of virtual social networks among military personnel? The hypothesis is: "Virtual social networks seem to have cultural, communication, value and educational benefits and cultural beliefs, psychological and behavioral harms among the employees of the Army of the Islamic Republic of Iran." The research is of applied type. The research method is descriptive and case study and the methods of data collection are library and field and data collection tools are documents, interviews and questionnaires. The collected data were analyzed using qualitative and quantitative methods. The independent variable of research is the cultural benefits and harms of virtual social networks and the variable is the subject of research of the personnel of the Army of the Islamic Republic of Iran. The results of the research show that virtual social networks have the benefits and cultural harms of communication, values, education and cultural beliefs, psychological and behavioral harms among the employees of the Army of the Islamic Republic of Iran. Therefore, the research hypothesis has been tested and accepted.