Knowledge management is a new tool for the organization management in twenty-first century; however, the application of knowledge management in government institution is scarce in this region. Generally, the research field of fire is focusing on technology, such as: fire safety equipment installed, shelter or escape expressway system, disaster prevention and rescuing system, command of the rescue capability. Instead of researching on knowledge sharing of firefighter. ??Based on above-mentioned, this research expected that the combination of theory, literature review. Data collection, analysis for fire department in Nantou County. To understand the knowledge sharing situation in fire department through questionnaires and intensive interviews, and try to provided the opinions and suggestions for knowledge sharing. The rage of research is focus on fire department, and the topic sources are relying on the literature and documents. Based on this, this study select questionnaires and intensive interviews as Research Methods. ??The aim of this research is to examine the different background firefighters whether affect knowledge sharing behavior or not. The results show that different individuals? backgrounds have different willingness to share knowledge and behavior. The back officers have higher degree of knowledge sharing in Explicit know-that and know-how. The Agents have higher degree of knowledge sharing in Explicit know-that and Tacit know-how.