The national defense education base is open to the public free of charge on National Defense Education Day. National defense education base refers to the base that is open to organized primary and secondary school students free of charge, and it is the basic position of national defense education that is open to the society free of charge on National Defense Education Day. Therefore, the national defense education base is open to the public free of charge on the National Defense Education Day. The national defense education base has the functions of education, experience, quality development, learning and entertainment. It is an activity platform for serving, uniting and educating the majority of minors, a practical classroom for promoting the all-round development of teenagers, and an activity base for experiential education.