In this work, the morphofunctional state has been studied at various times after the simulation of experimental syphilis. It is noted that discirculatory and dystrophic changes develop in the early stages of the study. The appearance of focal and massive necrosis of hepatocytes is accompanied by the development of an inflammatory process in the form of lymphoid infiltration around necrosis and hypertrophy of Kupffer cells. Subsequently, lymphohistiocytic infiltration spreads along the portal tracts, in which plasma cells and eosinophils appear, which are characteristic of syphilitic inflammation.