This study aimed to determine whether digital the use of folktales increases the vocabulary mastery of the seventh-year students of SMP Negeri 9 Buru. This research was a quantitative study by using experimental with a one-group pretest-posttest design. The samples consisted of 20 students from a total population of 320 students and were determined through a one-stage cluster sampling technique. Fifty items of multiple-choice tests were used to measure the vocabulary mastery of the students in the pre-test and post-test. The data obtained in this study were analyzed using descriptive statistics to determine the mean score and standard deviation between the pre-test and the post-test. A paired sample t-test through SPSS Version 20 was utilized to determine differences in the students' vocabulary mastery before and after receiving treatment. There is a significant difference between the mean scores in the pre-test and the post-test, namely (1.172 <1.438), which indicates that there are differences in students' vocabulary mastery before and after treatment. The results of hypothesis testing proved that the value of t count = 7.528 is higher than t table = 2.093 (p = 0.05, df = 19). The comparison between the two values shows that the value of t count is greater than T table, which means that Ho: digital folktales does not improve vocabulary mastery of the seventh year students of SMP Negeri 9 Buru, is rejected, and H1: digital folktales increase vocabulary mastery of the seventh year students of SMP Negeri 9 Buru, is accepted. Therefore, it can be concluded that digital use of folktales improved the vocabulary mastery of the seventh-year students’ of SMP Negeri 9 Buru.