Vocabulary is important in language learning, including in English classroom. However, there are some students who are lack of vocabulary. This research aimed to investigate the problems faced by university students in learning English through watching English movie as a way to learn vocabulary mastery and to discover the students’ strategies in learning vocabulary through watching English movie . To answer the research questions, the researcher employed a qualitative research methodology. Interview was used as an instrument to gather the data. The interview guideline was created by researcher related to the literature review and the aims of the research. The researcher involved four participants of students’ batch 2015. The finding related to the problems faced by students in learning vocabulary through watching English movie were students do not recognize certain word, the actor speak too fast and the type of movie. This research revealed that the strategies used by students in improving vocabulary through watching English movie are looking up the dictionary, memorizing, note taking, asking friends, searching the meaning in the internet, guessing, using word in the sentence, using word in context, repeat reading, summarizing, and learning how to spell.