This study aimed to examine the effect of the use of mobile-based Augmented Reality media to improve student learning motivation in SMP Muhammadiyah Surakarta on the science subject. The study used a quasi-experimental method with pretest-posttest control design. The tests of mobile-based augmented reality media in learning and learning motivation were conducted on the research subjects, seventh-grade students of Muhammadiyah 1 Junior High School Surakarta, with cluster random sampling. It was found that, based on the scores obtained from the statistical test with SPSS 20 program, the sig. level was 0.002, smaller than 0.025 (0.000<0.025). This shows that there is a different significant mean score between the control class and the experimental class. Therefore, the mobile-based augmented reality media influences the classroom learning process, which is shown by the increase in student learning motivation in the learning process.