Precise welding tool

The utility model belongs to the field of welding tools, and particularly relates to a precise welding tool which comprises a machining table, and supporting legs are arranged at the four corners of the bottom of the machining table. And the protection assembly is installed on the machining table and comprises rotating bases, connecting rods, connecting bases, sliding grooves, protection plates, protruding blocks and limiting grooves, the rotating bases are fixedly installed on the left side and the right side of the front side of the machining table, the connecting rods are rotatably installed between the inner sides of the rotating bases, and the connecting bases are rotatably installed on the outer sides of the connecting rods. The protective plate is reasonable in design, can be completely hidden at the bottom of the machining table top when not used for a long time so as to prevent the protective plate from shielding the external space, is convenient to use, and can be vertically moved to one side of the