In order to solve the problem that the indexes are difficult to describe quantitatively and the index data is uncertain in the process of aviation safety risk evaluation, a fuzzy evidence reasoning method for aviation safety risk evaluation is proposed.Based on the “man-machine-environment” system safety theory, the evaluation index system is constructed from four aspects of “personnel, aircraft, environment and management”.On this basis, the safety risk value and reliability structure representation of each evaluation index are determined based on triangular fuzzy number and its operation rules, and then the overall safety risk value is calculated by using the evidence reasoning algorithm, so as to determine the safety risk level.Finally, an example is given to verify the effectiveness and rationality of the method.