Sport has become a global activity attracting concern and attention of the world. Internationalization or globalization of such sport basically restricts the legal intervention of individual countries, unlike other social phenomena to which various national laws and regulations can apply. Today, with such internationalization of sports, the necessity of unified international sports law is emphasized as commercialism of sports grows. In addition, cases of disputes related to doping are increasing, and sports disputes are increasingly solved through CAS (Court of Arbitration for Sport), an international sports arbitration tribunal. Therefore, this study systematically examined dispute resolution and appeals process of the CAS. In the face of the 2018 Pyungchang Winter Olympic Games, the legal status of the CAS and remedy of rights on doping sanctions, especially the functions and roles of the AD hoc Division for doping, which was transferred from the Committee for Reconstruction of the IOC to the CAS from 2016, are attracting great interest and attention. Therefore, this study has examined this point in more detail. In addition, the doping case of German speed skater Claudia Pechstein and the judgment of the Supreme Court of the Federal Republic of Germany (BGH) are significant in understanding the dispute settlement and disobedience process through the CAS and drawing legal and political implications. It is necessary to prepare for the 2018 Pyungchang Winter Olympic Games through systematic analysis and review of dispute resolution and appeal resolution through CAS, the field of international sports law. And it also necessary to reduce the confusion and trial and error the Korea Sports Council has shown in connection with the matter of participation of Player Taehwan Park into the Olympic Games and actively participate in the maintenance of the inadequate domestic sports law system including the selection of national representative players for each sport.