The research is to shed new light to historical meaning and value of Carl Diem who was a pillar of modern sports in Germany and also served as an athlete, PE administrator, journalist, sports scholar and dean of a university. He has been highly regarded in Korea as a trail-blazer of German sports, but in his own country, he who once served as the secretary general of the 1936 German Olympics was at the center of controversy since he was named as a pro-Nazi, and even the name of a place named after him was deleted. Having said that, as an athlete, he played a huge role in organizing sports clubs where he worked as an chairman; organized and held various sports competition events; laid the academic groundwork for the modern sports in Germany by majoring in Sports in the United States. Above all, he is the one who came up with the torch relay and staved to define the significance of the Olympic Games by founding the International Olympic Academy. His academic and practical capabilities were proven through the establishment of Deutsche Sporthochschule Köln, also known as German Sport University Cologne. And Carl Diem Research Institute is still up and running to this day. Thus, in this research, I’d like to take a look at his passion for sports and changes of German sports including the German Olympics and offer a multi-faceted view on him who was evaluated during a historical turmoil back then.