The article first introduces the relevant background and process of Korean medical device companies to carry out international marketing, and then focuses on the specific practical cases of various strategies of Korean medical device companies in actual international marketing, and then analyzes and summarizes the international marketing strategies of Korean medical device companies. The successful experience and shortcomings in the implementation, and finally give suggested solutions, in order to have a certain reference and reference for Korean medical device companies and other companies in the development of international marketing. The introduction part first introduces the background of the analysis and research on the international marketing of Korean medical device companies, and concludes that the analysis and research of international marketing cases is an important reference for the development of Korean medical device enterprises. The second chapter expounds the development of Korean medical device companies. It highlights the necessity of Korean medical device companies to go international marketing through the description of the changes in the domestic market development and the development of international market demand for Korean medical device companies. Inevitability. The third chapter focuses on the current status of Korean medical device trade and an example of the implementation effects of Korean medical device enterprise product positioning strategy, market development channel strategy and product promotion strategy. The fourth chapter analyzes the main theoretical basis of some practical activities followed by Korean medical device companies in the development of international marketing business, as well as the successes and shortcomings in business practice. The fifth chapter proposes rationalization suggestions for improving the deficiencies in the international marketing business of Korean medical device companies based on the problems presented in the case analysis.