Abstract China is a coastal State with long coastline and possessing rich resources underneath its continental shelf. But the delimitation of continental shelves, with the neighboring countries of opposite or adjacent coasts, is little developed. This situation not only affects its relations with these States, but may also influences the future exploration and use of the sea. In 1969, the “Emery report” assures that there is potential abundant oil resources in the continental shelf of East China Sea. In 1974, Japan and Korea have signed agreement regarding the delimitation of continental shelf of East China Sea. On December 25 in 2000, the China signed with Vietnam “the Northern Gulf delimitation agreement”, which is marked as a good start for China to resolve the maritime delimitation problems with bordering and peripheral countries. This article consulted the foreign and national Sea Law scholars’ research results, concerning the geology, geography and delimitation of continental shelf to East China Sea; it also took reference from the international concerned practices as well as judicial cases. The delimitation of north (including south part) continental shelf of the East China Sea among China, Korea and Japan is the subject of this article. It discusses the tripartite continental shelf policy presentation and the agreement between Japan and Korea, and then introduces the China’s peripheral delimitation policies. We expect to propose some constructive opinions from several angles of international politics, economies and exploitation of natural resource etc., and hope to offer some beneficial consultation for the future resolution of this complicated issue.