This research aims to explore the benefits of semantic mapping for English language learners, particularly for IELTS students at ODIN Language Academy. The study evaluates the effectiveness of semantic mapping in vocabulary enrichment, comparing it with traditional strategies. The research involved 60 IELTS students, split into an experimental group (31 students) using semantic mapping and a control group (21 students) employing conventional methods. Pre-tests and post-tests were administered to both groups, and the results were analyzed using deductive reasoning and quantitative methods, including Classroom Action Research (CAR) and controlled experiments. The findings indicated that semantic mapping significantly improved vocabulary acquisition, helping students overcome challenges with word memorization and better prepare for IELTS tasks. Students exposed to semantic mapping outperformed their peers who followed traditional methods. The study concluded with recommendations to enhance semantic mapping implementation, highlighting the importance of teacher facilitation, promoting student collaboration, and optimizing time allocation in lessons.