This paper discusses Yu Gong, the earliest geographical work in China and the earliest work of regional human geography in the world, in four respects: delimitation of Jiuzhou, regional study model of Jiuzhou, dialectical relations between transforming of mountains and taming of rivers, and finally dim design of the square-zone model of regional exploitation, It considers that Yu Gong is the first overall development plan oi` comprehensive territorial management in China, the ultimate aims of which is to establish a unitary multinational state.