The under aged elite athletes are a kind of important strategic resources to the Korea which has adopted the elite sports policy since 1960s. It is because that the elite sports policy must be managed on the stable national investment with long-term strategy and new under aged elite athletes, attain the world class, must be discovered constantly. With this reason, Korean government is implementing several policies for the under aged athletes as the under aged athletes could concentrate on their roles, students and athletes of both ways. Notwithstanding this support of Korean government, the legal supporting system for the under aged athletes seems still insufficient. A significant structural problem, an recent amendment of Korean Civil Law in 2014 could not fully supported (Amendment Oct, 15 of 2014, Implementation Oct, 16 of 2015), was discovered. Being discovered several crime cases of under aged athletes and their marginal man, especially parents, are the evidence for the problem. The cases were introduced in the This research aimed to introduce and analyze the legal guardian system for the Korean under aged athletes and propose several measurements like need for modification of civil law amendment, installation of separate department and promoting the human resources for the problems was proposed at the end of the research.