The freedom of the high seas is the embodiment of the basic principle of navigation freedom in the high seas as well as one of the important contributions of the modern law of the sea.Determining the sovereignty scope of sovereign states and the application of the principle of freedom of the high seas have always been an important achievement of the continuous development of maritime law. Abusing the principle of freedom of the high seas is one of the main arguments for the developed countries to make excessive claims. Such claims based on the doctrine of absolute right in Roman Law do not accord with the value of modern law of the sea. The freedom of the high seas is shifting from absolute freedom to relative one.