The invention discloses a multi-target optimized rectification method of relay protection. The rectification method comprises the steps that (1) a target function of multi-target optimized rectification of relay protection is established, and according to performance requirements of relay protection, optimized indexes of relay protection are selected, and a multi-target optimization model of relay protection rectification is established; (2) rectification variables of multi-target optimization of relay protection are selected; (3) constrained conditions of the rectification variables in the multi-target optimization model of relay protection rectification are set; (4) the target function of multi-target optimized rectification of relay protection is solved by a chaos genetic algorithm to obtain a set of Pareto optimal solutions of the target function; and (5) one optimal solution which can satisfy an expected target of relay protection is selected from the set of Pareto optimal solutions in a fuzzy membership degree method. The method can realize integrated optimization of reliability, selective and quick action performance of relay protection.