The utility model discloses an R-shaped spring pin live-line supplementing tool. The electrified supplementing tool comprises an adjusting bolt, a shell and an insulating handle, wherein the working end of the shell is a free end, and the other end of the shell is fixedly connected with an insulating handle; a pin containing bin for containing the R-shaped spring pin is formed in one side of the free end of the shell in the radial direction of the shell, the pin containing bin comprises a radial slide way and a radial blind hole, the radial slide way is located on one side of the free end of the shell and is an open groove way, and the other end of the radial slide way extends towards the connecting end of the insulating handle and communicates with the connecting end to form the radial blind hole; the adjusting bolts are arranged on the two sides of the open end of the radial slideway, and the lower ends of bolt rods of the adjusting bolts penetrate through threaded holes in the shelland then extend into the radial slideway. According to the R-type spring pin live-line supplementing tool, the problem that the R-type spring pin is difficult to supplement in a live-line mode in theprior art is solved, meanwhile, the supplementing tool is simple in structure, convenient to operate and low in manufacturing cost, and the market competitiveness of the R-type spring pin live-line supplementing tool is improved.