The relevance of the problem under investigation is conditioned by the fact that a person in the situation of the disease, especially the disease with a poor prognosis in the first place, transforms the system of the value-meaningful priorities, organizing time perspectives, which are drastically changing its structure and length. The resulting changes of the time perspective in the situation of the disease significantly affect the outcome and quality of life. The aim of the research is to study the dissociation of time perspective of the individual patients with hematological disease. The basic method to study this issue is the experimental method, which allows revealing the specifics of the dissociation of time perspective of the individual patients with oncohematological disease. The research results, obtained by the authors are as follows: the basic element of the time perspective of the individual patients with oncohematological disease is the fatalistic present, which is dissociated from the future and the positive past. Negative past is not dissociated, as it is a source of maintaining the experience of the fatalistic present. The increasing share of the future, its integration into the structure of the time perspective of the individual patients with oncohematological disease will allow activating the productive mechanisms of coping with the disease, which has a prognostic significance in the subjective attitude to their own disease. The paper submissions may be used in the provision of psychological assistance to patients with oncohematological disease.