Both the central capitals of Yuan and Ming Dynasties are two large cities completely built in the ancient times of China, which have close inheritance relations with the Great Capital of the Yuan Dynasty and Beijing in Ming and Qing dynasties. Since they have been abandoned before completion, and have been sitting in wilderness or rural areas for a long time, the city remains are relatively well preserved. Based on the restoration of the archaeological data of Central Capital of Yuan Dynasty and the analysis of the design scale of the Central Capital of Ming Dynasty, this paper firstly compares two capitals from the perspectives of construction background and urban form. Further, it speculates on the original design, by comparing them with the urban thinking of "Kaogongji·Artisan" from four aspects of boundary, entrance and exit, core functional area, and integration structure, therefore examining the changing trend of the influence of "Kaogongji" on the planning idea of China’s ancient capital cities.