The invention relates to a method for improving the wear-resisting performance of a high-entropy alloy. The method comprises the following steps: smelting a high-purity metal test sample into a vacuumarc melting furnace under the protection of argon gas: repeatedly smelting to obtain a master alloy ingot with uniform components; preparing a needed test sample from the master alloy ingot through acopper mold suction casting method; carrying out repeated smelting and suction casting on the test sample to obtain the re-melted-state high-entropy alloy. The rigidity and wear resistance of the prepared high-entropy alloy subjected to re-melting treatment can be obviously improved and performance requirements on key wear-resisting parts of agricultural machinery are met; the high-entropy alloycan be widely applied to high-end agricultural machinery and also can be applied to other fields with high requirements on wear-resisting performance.