The invention relates to a performance test method and system of an abrasive coating system. The method comprises the steps of calling a collision track changing function between an engine blade and abox coating layer under a test working condition; running a test blade under the test working condition, controlling a feeding platform for installing a coating sample to execute feeding motion relative to the test blade according to a determined rubbing and scraping zero point and the collision track change function; and acquiring collision experiment data between the coating sample and the testblade, and recording feeding position data of the feeding platform at a corresponding moment. By the method, the test accuracy and the reliability of a performance test result of the abrasive coatinglayer can be improved.