Principles of delimitation of the continental shelf,such as principle of natural prolongation,equidistance principle,proportionality principle,and negociation principle,can be applied only based on equitable principle.

While the surrounding countries of the South China Sea have improper understanding of the UNCLOS,abuse of the principle of a natural prolongation,violate the principle of equity,covets the continental shelf interests brought by the sovereignty of South China Sea Islands,the delay of the delimitation of the continental shelf of the South China Sea happens.

The Significance of Natural Prolongation Principle in the East China Sea Dispute between China and Japan——Perspective from the Relationship between Institution of Right and Rule of Delimitation;

Based on the International Law of Sea,this article analyzes the three different methods in delimitating the Continental Shelf,claims that natural prolongation principle and the equitable principle should be observed while dealing with delimitation dispute,and diplomatic negotiation should be the appropriate solving method.