To widen the machining range of a work without damaging the original simplicity of a handy torch by integrally attaching a small size filler supplying device on the YAG laser beam handy torch.

An operator grasps a holding handle 13 to hold the handy torch 1 and a prescribed machining to a work is performed by irradiation of the YAG laser beam L from a nozzle 6. At this time, in the case a gap exists between the works as base stocks to be welded, the necessary filler wire can easily be supplied from a filler nozzle arranged near the machining nozzle 6 through a filler supplying device 10 fixed to the handy torch 1 body in the condition of holding the handy torch 1 body. Therefore, the operation can be performed without damaging the original simplicity of the handy torch 1.