Electrode holder

The utility model relates to a welding holder, belonging to an improved electric welding tool which is composed of an insulating casing (7), a cylindric holding block arranged in the insulating casing and a holding handle (6), wherein, a heat radiation structure with a groove and holes is arranged in the insulating casing (7), a slope (10) is arranged in the front end the top is provided with ear-rings (4), the groove (5) is arranged between the rings, and the front end is a sealed cylindrical holding tube head (1); the front end of the cylindric holding block forms adverse slope shape, and the middle cross section is concave; the front end of the holding handle is movably connected with the ear-rings and is inserted into the concave cross section (9). The utility model has the advantages of high safety, simple structure, good radiating effect and long service life.