Prison is a national penalty enforcement organ, and some fire problems of prison often are neglected because of its special situation. However, fire of prison will lead to many people die or injury, and cause the bad social influence. In this paper, based on the analytic hierarchy process and expert scoring system of fire risk evaluation methods, for prison fire risk assessment, and the evaluation conclusion will know the danger of prison fire more objective and more accurate. It will provide theoretical basis and technical support for preventing, controlling and extinguishing fire to create safe, stable, healthy and harmonious prison environment.