The purpose of this study was to compare and analyze the characteristic factors between acute medical groups and trauma groups on prehospital emergency patients. Also, it was to analyze the differences and correlations of emergency patient occurrence by districts(fire stations). These data were constructed using the transported patient data collected by each fire stations and the its data among 2001 - 2005 by Fire Management Agency. The result of transported emergency patients was as follows; Female patients were 1.5 to 1.9 times higher than male patient employees, and students. The highest frequencies of ambulance utilization times were 6-10min. in acute medical groups and 3-5min. in trauma groups and the average transportation distances were 11.03km in acute medical groups and 6.34km in trauma groups. According to the statistical analysis, the number of emergency patients by districts in a Metro City were significant differences(acute medical groups, trauma groups; F=40.990, p=.000, F=46.891, p=000). The regression analysis was significant the differences in correlations(F=411.335, p=.000, R2=.890). Finally, These data related the emergency patient charicteristics of the community will be used for the development and quality improvement on prehospital emergency medical service.