The utility model relates to a V-type insulator chain changing clamping fixture of a 500 kV compact line. The clamping fixture comprises a wire end connecting board clamping fixture, cross arm hoops, and two contraction force-loading rods. Through installing the fixture between a cross arm near an insulator suspension point and a wire connecting board and maintaining a consistent direction with the direction of an original insulator, lead screws on two sides are tightened to transfer mechanical load of the insulator, thereby providing convenience for changing of the insulator, effectively reducing working time, and accelerating working efficiency.