Theoretically any activity associated with some degree of risk. Risk cannot be completely removed; thus, scientific approach to the problem of risk is management not anything. In terms of popularity among users and wide geographical distribution, social networks becoming a private and personal relationship and a certain lack of control by the authorities, have become a means unmatched in the field of communications. However, the spread of these networks, despite of undeniable benefits, have damage to public organizations in the case of non-effective management. The aim of the present research is identifying public organization entering risks into social networks. This study is the applied and exploratory research. For this purpose, a sample of managers and experts in municipality of district 22 of Tehran were studied. Data analyzing by exploratory factor, confirmaty and T-test showed that risks of intelligence, moral, security, regulatory, strategic and productivity are the most important public organization entering risks to social networks.