The study aims to examine the effect of trust, convenience, product reviews, and information quality on online purchasing decisions at Tiktok shops (study of university students in Purwokerto). This research uses quantitative techniques. The sampling decision technique is Non-Probability Sampling, a purposive sampling approach with a total sample of 114 respondents. The data analysis technique used in this study is descriptive statistical test, data instrument test, classical assumption test, multiple linear regression test, model fit test and hypothesis test with the analytical tool used is SPSS. The results of the analysis show that trust, convenience, product reviews and information quality simultaneously influence purchasing decisions, then partially product reviews and information quality have a positive effect on purchasing decisions, but trust and convenience do not affect purchasing decisions.