A cleaning processing unit includes a spin chuck for horizontally holding a substrate and rotating the substrate around the vertical axis passing through the center of the substrate. A bevel cleaner is disposed outside the spin chuck. The bevel cleaner includes a cleaning brush. The cleaning brush has a shape that is symmetric about its vertical axis, and has an upper bevel cleaning surface, an end surface cleaning surface, and a lower bevel cleaning surface. The end surface cleaning surface is a cylindrical surface having its axis in the vertical direction. The upper bevel cleaning surface extends out from and is inclined upward from the upper end of the end surface cleaning surface, and the lower bevel cleaning surface extends out from and is inclined downward from the lower end of the end surface cleaning surface.