This study aims to determine the influence of digital marketing variables on purchasing decisions for books at the Intan Pariwara Mamuju Store. The research method was quantitative. The respondents were the consumers who bought books at the Intan Pariwara Mamuju Store, consisting of 96 respondents obtained using the Lemeshow formula through a non-probability sampling. The instrument used was a questionnaire. The data was analyzed using a simple linear regression technique, t-test, and correlation test. The results indicated that digital marketing positively and significantly affected purchasing decisions, as revealed by simple linear regression analysis. The direction of the positive relationship is seen from the value of the positive relationship coefficient, and then the significant value variable for digital marketing is sig. 0.002 <0.05, and the t-value value is 4.353 > t table is 1.661. The correlation coefficient value (R) is 0.410, meaning the influence of digital marketing on purchasing decision variables is strong.