The invention provides a comprehensive evaluation method used for a loop-opening scheme of an electromagnetic looped network, and belongs to the technical field of safe operation of electric power systems. The objective of the invention is to provide an electromagnetic looped network loop-opening scheme evaluation method based on a fuzzy AHP when evaluation and ranking are performed on a feasible scheme based on an analytic hierarchy process (AHP). The comprehensive evaluation method comprises steps of construction of a hierarchical structure model; construction of a fuzzy complementation judgment matrix; weight calculation; normalization calculation of index values; and comprehensive ranking of loop-opening schemes. The comprehensive evaluation method comprises steps of identifying indexes which can reflect nature of to-be-evaluated object, wherein the indexes include tide distribution, short-circuit current, N-1 and net losses; determining relations among layers and establishing the hierarchical structure model; then constructing fuzzy complementation judgment matrix, calculating weight and normalizing the index values; and at last determining the comprehensive ranks of the loop-opening schemes. By combining the advantages of the AHP and the fuzzy evaluation method, rationality and systematization of models are ensured and fuzzy properties of subjective judgment, selection and preference of people are fully considered.