|Our nation have several procedures and law for national airspace management, however those procedures and law not enough to manage airspace. Therefore, I have studied this paper for improving flight safety and for providing economics flight of civcil aircraft and military aircraft, also, for increasing efficiency of airspace through systematic airspace management, additionally, for improving nation defense ability and for preventation our nation damage when occuring airspace problem. Nowaday, in using airspace, two theory which freely use theory and use theory under jurisdiction is opposed by every nation in worldwide. Consequently, we can realize every nation endeavour to increase their jurisdiction airspace. However, our nation is not still prepared to cope with other nation when occuring airspace trouble, because airspace definition is not prescribed on our aviation law. Therefore, several problems which are improved in our airspace management are presented on this paper. The presented matters are as follows. First, The airspace definition is net prescribed on aviation law and responsibility limit of airspace management is ambugious. Second, problem on structure of approach control area and special airspace, Third, problem on airway system. Fourth, civil agency and military agency apply respectively different regulation in establishment of aircraft flight route. To grasp these problems, considered the airspace conception, airspace classfication, legal character of airspace, our nation airspace state and management together with other nation airspace state and management, also compared our nation airspace management with other nation airspace management. And, improvement methods to solve problems which was appeared by comparing and analysis are presented on this paper.