The purpose of this paper is to analyze the usage of internet communication language(ICL) in casual language by foreign students of Daegu area. The distribution of usage was different according to subtypes of ICL such phonological and orthographic usage, grammatical usage and lexical and semantic usage. The analysis of this paper showed us that ICL have an effect on foreign students’ casual language. Its cause is that using ICL of korean teachers and It is part of culture of korean students. (Keimyung University)