This study aims to determine and understand the Will Management System according to the Complications of Islamic Law and Jumhur Ulama. The method used in this study is an empirical juridical research method. Empirical juridical law is legal research regarding the application of normative legal provisions (codification, laws or contracts) in action on every legal event that occurs in society. Based on the results of the research, it is known that the regulation regarding wills has been clearly regulated in positive law in Indonesia as stated in the Compilation of Islamic Law (KHI) and also the opinions of scholars regarding wills and procedures. Compilation of Islamic law and the opinion of the majority of scholars have the same arrangement, namely the will may be carried out orally, in writing, or the majority of scholars call it ijab. To avoid conflicts in the future, the Compilation of Islamic Law and Jumhur Ulama also have something in common, namely a will which is carried out orally or in writing, must be witnessed by 2 (two) witnesses or before a Notary.