The principles of judge's independence and supervision of judges are among the consensus principles governing justice, whose necessity and essential role in realizing various governance goals, especially in fair proceedings and judicial justice, is undeniable. Although this position has been emphasized in many types of research, there has always been a difference regarding the exact definition and concept of these two principles and their relationship with each other, and the mechanism of observing the principle of the judge's independence in the process of supervising judges. This article has investigated this issue with a descriptive-analytical method using library sources. At first, by examining and providing a detailed definition of the principles of independence of judges and supervision of judges. It has been determined that these two principles are not originally negating and violating each other. Still, they are complementary to each other under the condition of respecting the judge's independence in the different stages of supervision of judges, which is possible by following the principles. Then according to this, the principles must be followed in the three stages and pillars of supervision. It has been explained that the principle of independence of the judges should be respected to protect the judges.