Introduction The United Nations Conference on the Law of the Sea Formation and Development of International Law of the Sea China's Participation in the Negotiation of the UNCLOS International Law, International Law of the Sea, and the United Nations Convention on the Law of the Sea The Basis in International Law The Relations between International Law, International Law of the Sea, and the Convention The Basis of China's Marine Rights Main Content of UNCLOS Main Content and Characteristics of the Convention Major Regimes Stipulated in the Convention How to Evaluate the Convention UNCLOS and Maritime Disputes Disputes over the South China Sea Conclusion