This study aimed to determine the effect of advertising, brand image, trust, and satisfaction on purchasing decisions. The type of this study was quantitative research. The sampling technique used in this study was non-probability sampling techniques that generated 110 respondents. The analysis technique used in this study was multiple linear regression analysis. Based on the simultaneous analysis, the results showed that advertising, brand image, trust, and satisfaction have an effect on purchasing decisions. While based on the partial analysis, the results showed that advertising, brand image, trust, and satisfaction has a significant and positive effect on purchasing decisions.