The invention relates to an insulator changer for a 220KV strain insulator-string double-split conductor, comprising a front chuck plate, a rear chuck plate and a stringing device for connecting the front chuck plate with the rear chuck plate; one end of the front chuck plate is provided with a front hanging plate, and the other end of the front chuck plate is fixed on a front yoke plate through bolts; one end of the rear chuck plate is provided with a rear hanging plate; two ends of the stringing device are respectively connected with the front hanging plate and the rear hanging plate; the rear chuck plate is provided with a movable clamping plate through a rotating shaft; the outer end part of the movable clamping plate is connected with the other end of the rear chuck plate through bolts; the movable clamping plate is provided with a bracket; a roller is arranged in the middle of the upper part of the bracket through a wire winding shaft; a pothook is arranged at one side of the top end of the bracket; a hanging ring at one end of a rope is hung on the pothook; and the other end of the rope extends out of the other side of the roller after bypassing the roller. The insulator changer is simple in structure, convenient to use, time-saving and labor-saving and has the effects of greatly increasing the work efficiency, shortening the power-off time and ensuring the normal work and life of people.