Abstract: Based on the training of interference sources searching, this paper comprehensively evaluates the ability of locating and searching the interference sources of navigation signals. The analytic hierarchy process and Delphi method are used to solve three problems: one is to establish the evaluation index system; the other is to determine the weight of the evaluation index; the third is to determine the quantitative evaluation method, so as to provide an effective comprehensive ability evaluation method for the navigation signal interference sources search training, and ensure the scientificity and rationality of the training content setting, score distribution and quantitative score. It is helpful to accurately evaluate the ability to locate and search the interference sources of navigation signals.