Using a complex of physiological methods developed by the author the initial state of bilateral permeability of the capillaries, the supply of tissues with blood through the capillaries, and the character of changes of those parameters in the conditions of the adaptational activity of microcirculation in schizophrenic patients were studied. It has been found that three types of microcirculation disturbances leading to tissue hypoxia can be distinguished in schizophrenia depending on the process type and stage. The types of the capillary permeability disturbances in various forms of the schizophrenic process are described.