ملخص
Vocabulary is the key component in language and one of essential elements to convey any message. Therefore, the purpose of this study is to highlight the challenges and difficulties encountered by EFL students at college of education-Janzour and techniques used by Libyan teacher in teaching vocabulary at the same college. The participants recruited for this study were twenty undergraduate students who were studying in the English department at Janzour faculty of education during the fourth and fifth semester of spring (2017). Two teachers of vocabulary who were teaching the same students also took part in this study. A mixed approach employing quantitative and qualitative research methods were used for data collection. The instruments used in this study were an observation sheet which was designed by the researcher according to the known standards to answer the first research question and a 10-item questionnaire to answer the second research question. The results prove that most learners struggle with all types of vocabulary learning problems and it showed that teachers tend to use techniques that do not need sustained effort, both teachers nearly used the same techniques in teaching new vocabulary. The findings will be advantageous to both EFL learners and teacher. Learners will be able to gain insight into the nature of difficulties and teachers will be able to update their techniques and be acquainted with more about techniques they could employ in teaching new vocabulary.