The invention discloses a wear-resistant automobile gear convenient to assemble. The wear-resistant automobile gear convenient to assemble comprises a gear body, wherein a circular groove is formed inthe side surface of the gear body; a groove is formed in the inner wall of the circular groove; a driving rod is movably connected to the side surface of the gear body; a raised plate is fixedly connected to the surface of the driving rod; a fixed circular ring is fixedly connected to the side surface of the gear body; a threaded hole is formed in the upper surface of the fixed circular ring; a fixed bolt is in threaded connection to the upper surface of the fixed circular ring; a square groove is formed in the fixed circular ring; and a spring is fixedly connected to the inner bottom wall ofthe square groove. According to the wear-resistant automobile gear convenient to assemble, through arranging the raised plate, the groove, the fixed bolt, the threaded hole, the fixed plate, the spring and a baffle plate, an effect on conveniently fixing the gear body is achieved; and through arranging a movable circular ring, a fixed plate, a semi-circular groove, a tension spring, a movable rod, a first lug, a second lug and a friction layer, an effect on conveniently fixing the gear body is achieved.