The parliamentary commissioner is one of the prominent symbols of the public sector ombudsman institution and the middle link between democracy and the bureaucracy of the new liberal government of England, which through handling people's complaints against the mismanagement of public authorities and institutions of their rights and freedoms based on sovereignty The plural form of this country is guarded. A fundamental evolution in the supervision of public affairs administration, which, in addition to differentiating the methods of action and execution by the commissioner and the ombudsman institution in general, compared to the functioning of other traditional supervisory authorities, i.e. courts and administrative tribunals, has caused the parliament to avoid maximum interference in The affairs of the government should be avoided through the establishment of laws and, instead of the rule of parliament, the bureaucracy governing the British administrative system should become a stabilizing factor and defend the rights and freedoms of citizens. For this reason, this research, the sources of which have been collected in a library method and subjected to a descriptive-analytical analysis, tries to understand the important role of the parliamentary commissioner in realizing the aforementioned goal by providing an appropriate answer to the question: the position and function of the parliamentary commissioner. How was it formed in the English legal system and which legal concept plays a key role in its realization? to discuss