This study reviews the latest grammar teaching theories and discusses its applications to Korean grammar teaching. It finds that the current trend in grammar teaching studies is shifting from written grammar to spoken grammar, changing from sentence-based grammar to discourse-based grammar, and adopting a discourse approach rather than a lexical approach. In addition, this study demonstrates that the grammar teaching study focus more on form within communicative approach. This study is able to confirm that grammar teaching method is influenced by linguistic theory and that its applications to classroom and textbooks are to be desired.