The invention relates to a center correction ring of a motor connecting shaft. The center correction ring is characterized in that a loop main body is mainly formed by an abrasion resisting body; a groove which is formed along the loop main body is concavely formed in one end surface of the loop main body. In such a way, when the center correction ring disclosed by the invention is arranged between a transmission shaft of a direct-driven motor and a main shaft of a machine device in a sleeving way and is used for correcting the central offset of the transmission shaft and removing generated vibrating and shaking actions as the direct-driven motor drives the main shaft of the machine device to rotate, an extrusion force generated by the vibration and shake can be absorbed by utilizing the design of the groove in the loop main body; meanwhile, since the loop main body is formed by the abrasion resisting body, the condition of abrasion caused by frequent rubbing can be avoided, and the effect of enabling the center correction ring to be used for a long time can be achieved.