It is indicated that in recent years, the issue of ensuring human rights has become especially relevant for domestic legal science, primarily because during this period the foreign policy conditions of our state’s existence have become significantly more complicated, which has led to internal problems (the attack of the Russian Federation on the territory of independent Ukraine). Thus, in the modern socioeconomic and political conditions of the functioning of our state, the problems of ensuring its security become particularly acute. Article 17 of the Constitution of Ukraine states that the provision of human rights and state security and the protection of the state border of Ukraine are entrusted to the relevant military formations and law enforcement agencies of the state, the organization and procedure of which are determined by law. Therefore, ensuring the security of the state is regulated at the legislative level and is carried out by specially authorized entities. Thus, from the point of view of constitutional law, it is important to study the status of the prosecutor’s office in interaction with other state authorities, however, from the point of view of the theory of constitutional security, we turn to the most important tasks of maintaining domestic stability, constitutional security, and observing the foundations of the constitutional system of Ukraine.
 It is noted that the functional purpose of the prosecutor’s office in the mechanism of ensuring the constitutional security of the state is an active activity aimed at identifying the constituent parts of the system’s integrity - functions, highlighting the specific qualities of each of them, and, finally, studying the connections, relations and dependencies of the functions of the prosecutor’s office among themselves in mechanisms for ensuring the constitutional security of the state. The functions of the prosecutor’s office should be understood as the main areas of activity of the prosecutor’s office established in the Constitution of Ukraine, which express the role and place of the prosecutor’s office in the mechanism of state power, which arise from the functions of the state to ensure law and order, protect the rights, freedoms, and legitimate interests of citizens and find their embodiment in the powers defined by the legislation on the prosecutor’s office. At the same time, the content of the functions of the prosecutor’s office is based on priorities that are of primary importance in the functioning of the state, its social and economic development, the protection of constitutional rights and freedoms of man and citizen, they make it necessary to focus on them the main attention of all prosecutorial activity. In the conditions of the war with the Russian Federation, the preservation of the unity of Ukraine is a mandatory condition for its further existence as a sovereign and independent state, the basis of which is the unity of the legal space (the basic principle of the rule of law), the main functional load for ensuring which must be relied on by the prosecutor’s office of Ukraine.