The invention relates to a circular-arc-shaped wear-resisting guard bar with handles for a speed reducer. The circular-arc-shaped wear-resisting guard bar comprises a base (1), a protective rod (2) and a connecting rod (4), wherein a wear-resisting layer (2.1) is arranged on the surface of the protective rod (2); one handle (5) is separately arranged on the positions, at the two sides of the protective rod (2), on the base (1); a circular-arc chamfer (6) is arranged on the upper side edge of the base (1); a circular arc (7) is arranged on the top of the protective rod (2); and a non-sticky layer is arranged on the surface of the base (1). The circular-arc-shaped wear-resisting guard bar with the handles for the speed reducer is convenient for a worker to transport and move, so that a great deal of manpower and material resources are saved, very good protection effect on the worker is achieved, and the worker is not easily injured after being hit by something; and wear resistance of the protective rod is improved, use time is prolonged, and the surface of the base is not liable to accumulate dust, so that cleaning is convenient.