Abstract: Disclosed is a pulley of a motor configured to accurately collect data for performance test without damaging screw threads of the pulley and a test jig, wherein the motor includes a rotation shaft and the pulley coupled to a distal end of a rotation shaft, and wherein the pulley includes a jig coupling groove axially formed at a distal end in the shape of a plurality of holes, and a part of a performance test jig is axially inserted, and the test jig of the motor, the test jig connected to the pulley coupled to a distal end of the rotation shaft of the motor to measure performance test, the test jig comprising a coupling pin lengthily and axially formed at the other distal end coupled to the pulley of the test jig, and inserted into a hole formed at the pulley.