We live in a world where social networks are used on a daily basis. Most generations use at least one social network every day. Social networks serve as a source of entertainment, connection, content creation or information seeking. In today's world, social media is one of the biggest platforms for brands to interact directly with consumers (Jamali and Khan, 2018). Most business have recognized the importance of advertising on social networks. Generation Z was born with a "mobile phone in hand" and prefers digital, as opposed to traditional media (Šimunić Rod, 2020). Therefore, generation Z is extremely attractive to advertisers, since they spend most of their free time on social networks and absorb content from every day (Fistrić, 2018). With social saturated with advertising messages more than ever before, it is becoming increasingly difficult for advertisers to gain attention and drive consumers, especially Gen Z, to make a purchase decision. Accordingly, the subject and goal of the work is to find an answer to the question: can advertising on social networks be related to making a purchase decision of generation Z. in other words, the goal is to find how successfully advertising on social networks influences the making of the final purchase decision of generation Z. The research was conducted according to the research conducted by Bilighan A., Peng C. and Kandampully J. (2014). A total of 113 respondents participated in the research. The results of the conducted research do not differ significantly from other research conducted on this topic. Also, this research analyzed gender differences, between men and women. Research has shown that women are more likely to search for product information on social media before making a purchase decision.