This study aimed to observe the dictionary use by English Department students. The reseach was conducted in Muhammadiyah University of Purwokerto. In this research, the reseacher adopted descriptive as the research method and the design of this research wa survey. The instrument of the collecting data was questionnaire. Based on the result data of analysis, there were 85.51% of the students use bilingual dictionary (E-I dictionary). They are an English Department students always face the word, sentence, or text in english. That was why the students often to use bilingual dicitonary (E-I) because they need understand well the meaning of the words in Indonesian language. Almost in english teaching learning needs dictionary, that was found from the data of analysis there were 98.55%, which belong to very high score, of the students often used dictionary in writing activity and the second place was 97.10% on translation activity. The last result was 91.30% of the students prefer to use electronic dictionary to printed dictionary, it was because the students thought that electronic dictionary was more simple and easy to use.