The invention provides a power grid operation risk rating display method based on the fuzzy theory, and relates to the power grid operation risk rating display method. At present, most of the power grid operation risk rating methods are aimed at one aspect of the operation of a power grid, and cannot synthesize risks in all aspects of the operation of the power grid. The method provided by the invention comprises the steps that 1 the accident occurrence probability is calculated, and the accident probability is rated; 2 the severity of each consequence is rated according to the consequence ofeach event triggered by a power grid accident, and the accident consequence is comprehensively rated through the fuzzy theory; and 3 on the basis of the quantified accident probability value and accident consequence value, a fuzzy comprehensive rule is used to calculate and determine the risk level comparison table of the dispatching operation of the power grid, and the accident risk level corresponding to the dispatching operation of the power grid is acquired according to the comparison table. According to the technical scheme, the fuzzy theory is used to comprehensively consider the influence of various factors on the operation risk rating of the power grid, and the severity of the accident is visually reflected through a coloring method.