The invention relates to an automatic welding apparatus. The technical scheme of the invention is to provide an automatic welding apparatus for hard weld wires of buzzers, which is characterized in that: the apparatus comprises a bottom plate, a circular table fixed on the bottom plate, an annular rotating plate horizontally arranged and rotationally positioned on the circular table about a vertical axis, a stepping motor for driving the rotating plate to intermittently rotate, a plurality of fixtures radially fixed on the rotating plate for placing buzzers, and a feeding station, a first wirefeeding station, a first welding station, a second wire feeding station, a second welding station, and a discharging station that are sequentially arranged on the bottom plate along the rotating direction of the rotating plate. The first wire feeding station has the same structure as the second wire feeding station, and the first welding station has the same structure as the second welding station. According to the automatic welding apparatus for the hard weld wires of the buzzers, automatic feeding, automatic wire feeding, automatic welding, and automatic discharging can be carried out, so that the full automation of the wire welding of the buzzers is achieved, the wire welding efficiency of the buzzers is greatly improved, and the production cost is reduced.