A clinical profiles and management of 235 consecutive traumatic hemothorax patients treated and followed up were reviewed in this study at the Department of the Thoracic and Cardiovascular, Yongdong Severance Hospital, during the period from Jan. 1992 to Sep. 1996. The age distribution was from l to 87 years, the most common age groups was 5th decade. The ratio of male to female was 2.64:1, showing male predominance. The most common cause of traumatic hemothorax was traffic accident in non-penetrating injuries and stab wounds in penetrating injuries. There were 223 non-penetrating and 12 penetrating injuries; 32 patients (13.4%) required thoracotomy. Single or multiple thoracostomy was performed in l80 patients (75.3%). The remaining 27 patients (11.3%) required only observation. Ten patients (4.2%) died, the mortality being related to head injury, intracranial hemorrage in three, bilateral flail chest in two, pulmonary embolism in one, aortic rupture in one, and irreversible hypovolemic shock in one. Nonfatal complications included atelectasis in 10 cases(4.2%),ARDS in 8 cases (3.4%), pneumonia in 5 cases (1.2%), septicemia in three cases (1.2%), empyema in three cases (1.2%), ARF in three cases (1.2%), and wound infection in two cases (0.5%).