The invention relates to a method and a system for evaluating the quality detection capability of electric network materials, which classifies the detection capability of a certain kind of materials of the detection organization within the electric network company according to the detection items, wherein the detection items are respectively management capability, equipment capability, environmentcapability, human capability and result reporting capability. The management ability, the equipment ability, the environmental ability, the personnel ability and the result reporting ability are scored respectively; An overall evaluation score is calculated according to the respective scores, and an ability requirement of the detection mechanism is judged according to the overall average score. The invention is conducive to improving the working efficiency and the accuracy of the evaluation.