This paper begins with a brief introduction of discourse analysis,and then it discusses two aspects of traditional classroom teaching discourse: the I-R-F sequence and turn-taking.The emphases of the paper lay on how language teachers can use classroom discourse analysis to do research and create learning environment,and how language learners can use it to achieve language proficiency and cultural competence. This paper begins with a brief introduction of discourse analysis, and then it discusses two aspects of traditional classroom teaching discourse: the IRF sequence and turn-taking. The emphases of the paper lay on how language language can not use classroom discourse analysis to do research and create learning environment, and how language learners can use it to achieve language proficiency and cultural competence.