Disorders of the hemostatic system and inflammation play a key role in the pathogenesis of new coronavirus pneumonia (NCP), determining its course and outcome . To study the dynamics of the state of the hemostasis system and the severity of the acute phase response in patients with new coronavirus pneumonia. We determined APTT, prothrombin time (PT), fibrinogen (F), D-dimers (D-d), antitrombin III (AT III), C-reactive protein (CRP), platelet count in 22 patients . In 49 patients, the viscoelastic properties of a blood clot were studied by thromboelastography (TEG) with koalin . The age of the patients ranged from 40 to 77 years . According to CT, the severity of 100% cases corresponded to CT2-CT3 . Acute respiratory failure (ARF) was diagnosed in 16 patients . A control group included 25 apparently healthy subjects . During hospitalization, patients with NCP were characterized by: an increase in the concentration of D-d, CRP, Fg, lengthening of APTT and PT, ATIII activity and platelet count not differing from the normal range . 10 days after hospitalization and against the background of ongoing therapy, patients with NCP showed positive dynamics in the hemostasiological profile and the severity of the inflammatory response . Thromboelastography indices in patients with LCP did not differ from control values both at hospitalization and on day 10.Thus, in patients with novel coronavirus pneumonia, an increased prothrombotic activity and a pronounced inflammatory response are recorded . Against the background of treatment, there is a positive dynamics in both the coagulation status and the inflammatory response . Additional studies are needed to determine the diagnostic capabilities of thromboelastography in patients with NCP.