The Organization Law of the National Government was promulgated on October 8, 1928, it Jetermined that the system of the Central Government would be five-yuan. The essay explores the organization and authority of the live yuans in the Central Government and the development of the system of the Central Government until 1947.The Organization Law of the National Government of 1928 is the most important among those organization Laws. The reasons are (a) the Organization Law of 1928 tried out the system of the five-power constitution alleged by Dr.Sun Yat-sen, and (b) the system of the National Government followed the Organization Law generally until 1947 in addition to a little change in the problem of the cabinet. Therefore, the essay focuses on the organization Law of 1928 and sypplemented by the revises of it to discuss the role of the Organization Law of 1928 in the development of the China legal system today.