The government of finance is scanty, so the government adopts controlling measures in order to keep manpower effectively in recent years. However, under this situation, are there enough firefighters to fulfill the ever-increasing tasks? Manpower planning is the important subject of modern personnel management. The every organization needs to estimate the future manpower situation. Manpower planning can apply manpower resources, give perfect training, and use manpower effectively in order to develop the function operation of the organization. This study mainly studies the manpower planning of fire department, and tries to build up manpower requirement model by Markov Model. when we analyse the information about promotion, retirement, and novice, the modal will provide fire manpower planning helpfully information. Those information is accurate to calculate shift of all steps state about firefighters. They predict that if the change of firefighters can supplies reach the demand manpower within 10 years in the future. This study expects to provide a guideline to fire department of the establishment of personnel policies.