Results of treatment of 100 patients with posttraumatic pericarditis after stab (n=79) and blunt (n=21) thoracic trauma. Factors, leading to pericarditis onset, were primary infection, direct heart and pericardium injury (87,3%), inadequate pericardial cavity drainage (13,9%), insufficient medicamental pericarditis prophylaxis postoperatively (8,9%). Late medical recourse after blunt trauma of the thorax had led to pericarditis onset due to clotted hemothorax (23,8%), exudative pleurisy (19%) and pleural empyema (14,3%). Early diagnose and complex conservative treatment of posttraumatic pericarditis allowed recover in 78,5% (n=62) and 81% (n=17) of patients with stab and blunt thoracic trauma, respectively. Pericardial cavity drainage with intrapericardial streptokinase introduction proved to be an effective method of treatment of fibrinopurulent pericarditis.