As the importance of sports medicine is emphasized worldwide, the possession of specialized personnel for improving athletic performance, injury prevention, and physical fitness management is being emphasized, including individual and team sports. Due to handling particularly sensitive personal information related to medical activities in the sports field, discussions mainly revolve around the basis and scope of responsibility. However, in South Korea, there is no established legal system regarding the utilization of specialized personnel in the field of sports trainers. Despite favorable conditions for growth in the domestic and international fields of sports trainers, various practical limitations have led to significant problems, beyond mere expectations and levels of interest. Therefore, in order to enhance social awareness and secure the identity of professional roles, it is necessary to establish legal regulations among organizations and delineate the limits of ethical responsibilities. Hence, this study aims to propose ways to strengthen ethical regulations for sports trainers for the protection of medical information of athletes as follows: First, clarify the classification of medical information and provide specific guidelines accordingly. Second, regulate the scope of use according to purpose and specify provisions for obtaining consent from data subjects and identifying those who comply with it. Lastly, there should be a system in place that allows for disciplinary action and ethical sanctions in case of violation of the proposed "Prohibition of Disclosure of Athlete Medical Information" obligation.