In its utilization, there are many problems that arise in granting land rights to the islands in NTB, therefore it is necessary to examine with regard to the management of these islands. The formulation of the problem in this study is how the basic function of law in the arrangement of islands which reflects the integrated legal function, mechanisms and factors that influence the law in the arrangement of islands. The research method used is normative legal research. There is a conflict of norms that occurs in the rule of law on the arrangement of islands, namely between PERKABAN No. 17 of 2016 with PERKABAN No. 9 of 1999 causing conflict of norms. So that there are several factors that influence the integrated legal policy in the arrangement of the islands in West Nusa Tenggara including the problem of conflict over the norms of regulating the islands, law enforcement factors, supporting facilities and facilities as well as economic factors. Therefore, it is necessary to have clear legal arrangements.