This study was aimed at investigating linguistic difficulties encountered by non-English Department students in speaking English, its causes and the strategies used by them to overcome their linguistic difficulties. The method used in this research was descriptive qualitative. The data collection technique used were observation, questionnaire, and interview. The researcher used triangulation data to investigate and answer research questions. The research finding showed that the students had linguistic difficulties in the grammar, vocabulary, and pronunciation aspect. It showed that 70% students encountered difficulties in pronunciation, 67.5% students encountered difficulties in grammar, and 62.5% students encountered difficulties in vocabulary. The factors which caused the linguistic difficulties were found and showed that 52.5% students felt inhibited to speak English, 67.5% students had nothing to say, and only 37.5% students had low or uneven participation. In addition, there were found strategies used by non-English Department students to overcome their linguistic difficulties. The result showed that 65% students had practice speaking English at least two times in a week, 70% students used a way to describe something, 95% students used easier vocabulary, 95% students asked for repetition and 95% students noticed the difficult words and looking its meaning in the dictionary. In additions, the students also explained another strategy which they like to do, such as memorizing vocabulary, reading a grammar book, watching English video and movie and listening English music.