In 1936, the Institute of State Law of the USSR Academy of Sciences underwent an internal reorganization, as a result of which three sectors were formed, one of which was the public law sector. Since that time, the current Sector of Administrative Law and administrative procedure has its history. In the 20–30s of the XX century, the science of administrative law developed poorly, scientists were subjected to political repression for their scientific beliefs. In the mid-30s, the idea of the death of Administrative Law was even replicated. The leading positions were occupied by the science of management. Meanwhile, the scientific staff of the sector continued to develop the science of Administrative Law. With the beginning of the Great Patriotic War, many of them went to the front. The country noted their exploits with state awards. S.S. Studenikin became the first scientist who defended his dissertation for the degree of PhD in Law in Administrative Law (1940). In the 50–60s, in the Sector work was actively carried out to train young specialists in the field of Administrative Law. The name of the Sector has repeatedly changed, but service to the state and science remained unchanged. In the 60s, new directions of scientific research were formed at the Institute, reflecting the issues of strengthening Soviet democracy, forms and methods of people's participation in the leadership of the state and society, etc. The result of the fruitful work of the staff of the Sector was the publication of a number of monographs on Administrative Law. The political and economic transformations of the 80–90s could not but be reflected in the works of the scientific staff of the Sector. In the late 90s - early 2000s, the direction of research in the Sector changed towards the administrative process and the problems of automated control systems. In 2018, the Sector of Administrative Law and administrative process was established. Currently, the scientific staff of the Sector carries out fundamental, exploratory and applied scientific research on the conceptual problems of Administrative Law, administrative process and Financial, Tax, Budget Law. Actively participates in the work on the reform of administrative and tort legislation, legislation regulating control and supervisory activities, are members of the expert subgroups of the Government of the Russian Federation on the development of the draft of the new Administrative Code of the Russian Federation. During its 85-year history, the Sector has given the country and science a lot of honored scientists and honored lawyers, outstanding scientists who have left significant fruits of their scientific research that will be relevant and in demand for a long time.