Abstract: Casual conversation is a fundamental activity in human life. The people are not able to avoid themselves from conversing with others. By this reason, this study attempts to explore the EFL learners' casual conversation. The exploration is limited to only analyzing spontaneity, interactivity, interpersonality, coherence and appraisal. The data are naturally occurring data which are collected in three main steps. The first is recording the conversation. It is followed by transcribing the conversation. Lastly, the data are qualitatively analyzed. The analysis of spontaneity finds that the speakers produce a lot of pauses, repetition, false starts and backtracking, sentence tail and also chunks. Furthermore, the analysis of interactivity reveals that turns are often overlapped by each speakers. Additionally, the analysis also figures out that one of the speakers is not interpersonally involved in the interaction. Meanwhile, the analysis of coherence shows that the casual conversation between both EFL learners have good control of coherence since the utterances are relevant one another. However, the findings still indicate that both EFL learners still need guidance from their teacher to increase their speeds and reduces their pauses in order to achieve fluency in casual conversation. The teachers also need to assist the EFL learners how to interpersonally involve in the interaction.