For the purpose of improving the quantitative accident risk management level of fuzzy system,this paper proposes an assistant analysis method of accident risk management based on the combination of triangular fuzzy number and Bayesian Networks(BN).In the process of the analysis,the method determines the risk factors based on the risk mechanism analysis for the risk event,establishes the Bayesian Networks,processes the prior probability of the risk factors with triangular fuzzy number,inferences the probabil...