This research analyzes the weaknesses of The Artificial Islands Regulations In International Law To Realize Territorial Jurisdiction currently and how to reconstruct the law Based On Justice Value in a constructivism paradigm where the type of research method used is normative juridical and the specifications of this research have a prescriptive analytical nature with the approach used by the author being a statutory approach. The research results found that the legal concept of artificial islands has been included in UNCLOS 1982 as a basic framework, although there are gaps and ambiguities in the existing regulations regarding artificial islands. Every country has the right to monopolize the construction of artificial islands and can explore and exploit all natural resources in its territory. However, countries that create artificial islands in accordance with their national interests and consider the status of artificial islands as legally valid artificial islands have caused many conflicts that have an impact on the sovereignty and jurisdiction of the country. This happens because there is still no detailed legal definition and regulation in UNCLOS 1982. Therefore, the reconstruction of regulations regarding artificial islands in international law needs to be carried out so that the determination of the status and criteria for the status of artificial islands can classify the rights and obligations of countries to determine the sovereignty of the country on artificial islands and jurisdiction over artificial islands in their country.