Teaching vocabulary successfully considered challenges in teaching English for Iraqi EFL students. Instructors of English language concentrate on teaching grammar. As a result of concerning grammar as a priority, vocabulary has been ignored. Some instructors have neglected the truth that learning vocabulary is needed for students, not only to enhance their realization but also to help them in other fields like grammar. In process of learning English language, vocabulary is regarded as a basic concept for a communication, Iraqi students face difficulties in memorizing and understanding vocabularies. The present study achieved in the Department of English, College of Education for Women, University of Baghdad in academic year 2020-2021. The sample of this study was thirty first year students. To perform the objective of this study, the researcher used pre and posttests to collect data. These data was analyzed by SPSS program. The study concluded that Iraqi EFL students face difficulties in using correct vocabularies.