The relevance of this research is due to the growing commercialization and integration of "virtual reality" (VR) technology into everyday life and science, which requires understanding its impact on the user's experience and the construction of human subjectivity, as well as the potential for modifying human interaction with the outside world. Scientists are discussing the potential of VR and expressing the need for it to open the doors to a new era for humanity as soon as possible. In this context, critical analysis and philosophical reflection on the development of virtual reality technology and the possible impact on human life become extremely relevant and topical. The subject of the study is the content and transformation of the subject of reality in the virtual space through mediatization. The object of the study is virtual reality The work is based on the deconstruction method based on the principles of interpreting what is read without distorting the meaning. With his help, the most significant and appropriate fragments were selected for scientific understanding and research of the phenomenon. As a result of the study, it was found that the informatization of the subject in the process of interaction with the virtual reality environment, a person as a subject is no longer an isolated substance, but expresses his existence through informatization.The concept of "virtual personal presence" provides a person with a framework for ontological expansion in the virtual dimension, therefore, the activity of virtual reality has a profound influence on the subjective construction of a person, characterized by posthumanistic features. Along with this, such influence at the level of ontology is mainly manifested in the virtualization and informatization of the subject. Virtualization of the subject not only shows the expansion of subjectivity in the virtual dimension, but also expresses that it always retains an ever-changing, plastic potential; informatization of the subject implies that in the activity of virtual reality, the subject represents his existence in the form of a specific information structure.