The principle and calculation method of analytic hierarchy process (AHP)are introduced in detail，and an example is given to illustrate the application of this method in regional lightning disaster risk assessment． With respect to the disadvantages of traditional expert scoring method and on the basis of actual work，it is suggested to adopt two group judgment methods of back-to-back Delphi method and the combination of back-to-back and group discussion， which can reduce the deviation of expertsʼ understanding of the project and effectively improve the objectivity of the evaluation，so the final evaluation results tend to be reasonable． Group judgment rules should be established to help avoid scoring results with large differences．