Nowadays, social media has been constantly preferred in many media channels. In this study, definition of social media and possible effects of it on consumers' food products preferences were revealed. Moreover, importance of this media channel has emphasized in case of a crisis related to food products. Main material of the study was secondary data. Social media, in a wide concept, a group of application to provide for users to create their contents and change, share and discuss them. Social media, depending on countries and product groups, effects consumers' purchasing behaviors via reveling new norm and values. In this scope, firms should observe consumers' tendencies to be able to response their demands and focus on customer relationship management in social media.