This article offers an overview regarding the concept and the status of jus cogens. The overview makes intelligible the concept of jus cogens as provided by the International Treaties, Cases and the Law Experts. There are still some debates regarding the concept and status of jus cogens among the international community. According to the proposition argued in this article, irrespective of debate, the concept and status of jus conges rules are enshrined in the Vienna Convention on the Law of Treaties 1969 (VCLT) and the international community treat jus cogens norm as one of the fundamental principles of international law.