To provide an external angle cutting machine which has a compact body without lowering workability and can be manufactured at a low cost, although in a conventional external angle cutting machine, an electric circular saw is fixed so as to tilt by 45° and a workpiece is horizontally set and moved in order to carry out angular cutting.

The angular cutting is carried out under the condition that the circular saw 3 is vertically set and directly moved, and the workpiece 4 is fixed to a surface plate tilting by 45° with respect to the circular saw.