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Social media is a component of the current Industrial Revolution 4.0 lifestyle. Additionally, it has begun to be used in the field of education as a tool for learning, such as Instagram. Instagram can be a unique and interesting way to present educational content. The feature includes feeds, stories, reels, IG TV, and an IG filter. This study uses Instagram Reels to improve the students’ vocabulary for EFL students at the university. The aim of the research is to notice how effectively Instagram reels are improving students’ vocabulary skills. Using systemic review. The data is collected by reading articles and then clarifying them into 10 articles to review. According to the study’s findings, students may improve their vocabulary just by using Instagram as a language learning tool. They also believe that studying Instagram Reels’ content really improves their language proficiency. This study demonstrates how students can adjust to the 4.0 era by learning using social media, like Instagram Reels, which is accessible anywhere at any time.