Welding tool for landing leg of guard railing

The utility model discloses a welding tool for a landing leg of a guard railing. The welding tool comprises a working table, a limiting block set used for clamping workpieces is arranged on a tabletop, three compression cylinders used for compressing the workpieces are fixed to the tale top, an ejection air cylinder used for ejecting the workpieces out of the limiting block set is fixed to the bottom of the tabletop, and control buttons used for controlling the compression cylinders and the ejection cylinder to act are arranged on the working table. The welding tool for the landing leg of the guard railing is scientific in design, reasonable in structure, easy to manufacture and operate, low in cost and convenient to maintain; the guard railing workpieces welded by the welding tool are small in error and high in quality and speed, the uniformity of products is greatly improved, labor intensity of workers is relieved, and working efficiency is improved.