The purpose of this study is to find out the effect of factors influencing consumers' attitudes towards the advertisements aired on Youtube on purchasing behavior. In the study, after explaining the importance of social media and YouTube advertising, and the consumers' attitudes towards advertisements conceptually, similar studies in the literature are scrutinized. Consumers aged 18 and above using YouTube in Turkey constitute the universe of research. To find out the effect of consumers' attitudes towards YouTube advertisements on purchasing behavior survey technique is used. In this sense, using convenience sampling method through social platforms such as Facebook, Twitter, LinkedIn, and WhatsApp throughout Turkey, an online survey is applied to gather the data of YouTube users. According to the findings of the study, it is seen that the factors (entertainment, informativeness, credibility, and irritation) affecting the attitudes towards YouTube advertisements influence the purchasing behavior directly and meaningfully. The most effective factor in the consumers' purchasing behavior is entertainment. There is a negative correlation between irritation factor and purchasing behavior. As long as the irritation in the advertisements decreases, a positive attitude towards purchasing behavior will increase.