Baron Pierre de Coubertin who in 1894 established the Olympic Movement, is recognised as the father of modern Olympism in other words father of modern Olympic Games. He modernized ancient Greek ideals and launched them to the rest of the world through the staging of a modern Olympic Games and its spirits is embodied as Olympism in current Olympic Charter. Today, the Olympic festival celebrates the ideals which remain at the heart of Olympism across the whole world. According to Olympic Charter, by blending sport with culture and education, and international politics Olympism promotes a way of life based on: the balanced development of the body, will and mind, the joy found in effort, the educational value of being a good role model, respect for universal ethics including non-discrimination and respect for others. In order to accomplish this ideal, Olympism uses sport to promote the balanced development of people as an essential step in building a peaceful society that places a high value on human dignity. For the fulfil of Olympism, the International Olympic Committee(IOC) was created. Essentially, from the legal point of view the IOC is a non government organization based in Lausanne, Switzerland. The IOC organizes the modern Olympic Games held in Summer and Winter, every four years. The IOC is a parent organization intended to localize administration and authority for the Games, as well as to provide a single supreme legal entity which owns copyrights, trademarks, and other intangible properties associated with the Olympic games. There are other organizations which the IOC coordinates as well, which are collectively called the Olympic Movement. One of the most important organ of Olympic Movement is the National Olympic Committee(NOCs) which has the attribute as the branch of IOC in separate countries. Nowadays National Olympic Committees are the national constituents of the worldwide Olympic movement, however recognition about its norm value is usually insufficient among even sports related persons and sport organizations as well. Subject to the controls of the International Olympic Committee, National Olympic Committees are responsible for organizing their people s of separate Nations participation in the Olympic Games. Considering all these legal aspects and issues based on the current Olympic Charter, this paper exams the function and mission of IOC for the purpose of enhancing about the correct understanding of IOC and the right model of NOC which must preserve its own autonomy in its own country.