The principle of the rule of law is one of the fundamental principles of administrative law. Every legal and political system needs to apply the principle of the rule of law throughout the administrative system in order to promote and develop. The aforementioned principle has been examined from two aspects: formal and substantive. In some cases, the rule of law is challenged in terms of the form and nature of the law, meaning that the statutory law does not have the necessary conditions for government, but in other cases, the rule of law faces challenges in terms of substance and the political and administrative system does not have the necessary conditions for the application and application of the law. But the main issue is what components and characteristics does the rule of law have and what is the guarantee of its implementation in administrative decisions? In administrative law, due to the mandatory nature of laws, violation of the aforementioned principle is faced with the guarantee of the implementation of the decision's invalidity or, in other words, nullity. In this article, the author will refer to the explanation of the issue in a descriptive and analytical manner.