Injuries and infectious diseases have been the most important public health problems since the beginning of human life. Injuries result in death of about 30,000 people each year in South Korea. In terms of years of life lost, injuries are considerably more costly than either heart disease or cancer. In terms of cost - both the direct costs of care and the indirect costs to individuals, families, and societies of a diminished life - injuries are among the most expensive of all social problems. The main purposes of this study are (1) to describe the outcomes as well as treatment process of brain injured patients and (2) to identify the factors impacting on length of stay during hospitalization and hospital fees. The research method used in this study was to review the medical records of five hundreds brain injured cases using systemic random sampling. The multiple logistic regression was administered to identify the factors impacting on the outcomes. The results are as follow: (1) the consultation rate was found to be 72.9% while referral rate was 11.2%; (2) nearly 30% of the respondents were hospitalized over 30 days; (3) multiple logistic regression analyses revealed that the determinants influencing LOS were number of consultations, number of lab tests, and surgery; (4) the determinants of hospital fee were severity of brain injury, gender of patients, number of consultations, number of lab tests, and surgery.