One of the most important features of the age we live in is that the developments in communication technologies have created transformations in the roles of the parties that carry out production and consumption. In this process where new forms of relationship emerged; sectors, occupations and income models have also diversified and gained new features. Social media, which emerged with Web 2.0, is at a very central position in all these transformations. One of the most important areas affected by social media is advertising. Social media has affected many elements of advertisements, from content to technical features, from platform to ethical principles. A new type of advertising has emerged through the phenomena that share on social media platforms. This study tries to understand the structure of advertising by Instagram influencers. Posts with advertising content made by the phenomena in the sample of the research for a month were examined by subjecting them to content analysis. As a result of the research, it was seen that Instagram phenomena included an advertisement in one of every five posts on average. It has been determined that the most advertised product types are household goods, food, personal care and clothing products. Keywords: Social Media Advertising, Instagram Advertising, Influencer Advertising, Influencer Marketing