This study aims to analyse similarities and differences of greeting expression among Korean native speaker(KNS), Chinese Korean Learner(CKL), and Chinese native speaker(CNS). This research was studied based on the speech-act theory of Searle(1969). SAQ and DCT were conducted in three groups to analyze whether each group has the typical greeting and how greetings are presented by which speech-act in the case when the typical greeting is not used. Both greetings and the greeting-act were examined. It is observed that CNS did not use typical greeting much whereas CKL used it frequently because they don’t know well about proper greetings suitable for situations. There were differences on not only aspects of speech-act used as greetings and the greeting-act among three groups. CNS hardly showed polite greetings such as banding the waist. By comparison with CNS, the polite greetings were presented much more in KNS. It also offered that CKL greeted more polite than KNS. It was likely to show that CKL is on the interlanguage between KNS and CNS on both greetings and the greeting-act. That is why CKL should be educated to greet properly in the situations as KNS. The significance of this study is using a different way from existing research - having studied greetings by analyzing textbooks or CNS’s greeting. In addition, specifically in reference to the Chinese, greetings and the acts performed during, have been thoroughly researched. (Keimyung University)