In the article on the basis of the key category of administrative law «a mechanism of an administrative and legal regulation» is disclosed the essence of the mechanism of administrative and legal regulation of realization of the right to appeal to the public administration. The author tries to describe how the mentioned system-forming abstraction reflects the movement of legal form in the field of realization of the right to appeal to the public administration. She comprehensively analyzes the structure of the considered legal phenomenon and in detail defines its individual components. She proves the need of highlighting of juridical and factual realities in the process of realization of relevant rights. The determining features of the researched mechanism find their reflection in the definition proposed by the author.