Several researchers investigated the efficacy of digital flashcards in promoting student vocabulary and concluded that digital flashcards had a significant impact. However, the learning process will not be successful, if only use learning media without combining it with the appropriate learning method. The other researchers discovered that using numbered heads together as a learning method can help students promote their vocabulary. According to some of these studies, learning media combined with learning methods can promote student vocabulary and facilitate learning. Therefore, this research aims to determine the effectiveness of using digital flashcards combined with numbered head together in learning vocabulary at SMPN 18 Semarang. A total of 64 students participated in this quasi-experimental study. The research was conducted in the experimental group (32 students of class VII F) and the control group (32 students of class VII G). The researcher gave pre-test, treatment, and post-test during the study. The data were analysed through the SPSS program. This research showed the experimental class got higher vocabulary score than the control class. It can be seen from the mean scores of the post-test of both groups: the experimental class is 78.19, and the control class is 73.19. Result from independent sample t-test revealed that the value of sig (2-tailed) is 0.041<0.05. Based on the result of this research, the researcher conclude that digital flashcard combined with numbered head together had a significant effect on promoting students’ vocabulary.