Sucker rod with replaceable anti-corrosion device

A sucker rod with a replaceable anti-corrosion device comprises a sucker rod body, the anti-corrosion device is arranged on the sucker rod body, the anti-corrosion device comprises nuts, slips, a protective cover and an anode, the anode is arranged on the sucker rod body in a sleeved mode, the protective cover is arranged on the outer side of the anode in a sleeved mode, the slips are arranged in the two ends of the protective cover in a sleeved mode, and the nuts are connected between the slips and the protective cover in a screwed mode. An inner end face is arranged in one end of the nut, outer threads are arranged on the surface of the other end of the nut, a boss face is arranged outside one end of the slip, an outer conical face is arranged on the surface of the other end of the slip, and inner threads, an inner conical face and an accommodating cavity for accommodating the anode are arranged in the protective cover. The anti-corrosion sucker rod is novel in structure and ingenious in conception, the suc