Purchase decisions made by a consumer describe the extent to which the seller is in an effort to market a product to consumers. The existence of advertisements and good product quality for customers so that customers are always interested and believe in the e-commerce. TikTok Shop is one of the most popular and potential marketplaces in Indonesia today. This study aims to determine the effect of advertising attractiveness, product quality and lifestyle simultaneously and partially on purchasing decisions on Tiktokshop. The sampling technique was purposive sampling. Criteria Based on students who have made a purchase on Tiktokshop at least 1 time and are active students at three universities in Purwokerto. The sample obtained was 100 respondents who were sampled and collected using a questionnaire. Data analysis used multiple linear regression. The results of this study prove that simultaneously the attractiveness of advertising,
product quality and lifestyle on purchasing decisions on Tiktokshop. Partially the attractiveness of advertising and lifestyle has a positive and significant effect on purchasing decisions on Tiktokshop, while product quality partially has a negative effect on purchasing decisions on Tiktokshop.