The researchers developed the investigation “The Implementation of the Task-Based Language Learning Approach ─ A Strategy to Enhance Second Year Students' Vocabulary Deficiency at Centro Escolar Mercedes Monterrosa de Cárcamo During 2020” in order to verify if implementing a lesson plan based on the Task-Based Language Learning (TBLL) model can help second year students’ management of a proper level of vocabulary. Therefore, this study proposes teachers a different class structure and environment where students can acquire new vocabulary in an easy and enjoyable way