The purpose of the present invention is to provide a sheet bundle binding processing apparatus capable of performing a binding process in high productivity as selecting a binding processing unit from a staple binding device arranged in a sheet introducing area of a processing tray and a press binding device arranged outside the introducing area. The present invention comprises a sheet bundle binding processing apparatus including a processing tray on which sheets are stacked, an aligning device which aligns the sheets stacked on the processing tray, a first binding device which binds a sheet bundle stacked on the processing tray, a second binding device which binds a sheet bundle stacked on the processing tray having capability to bind a fewer number of sheets than that of the first binding device, and a controller which controls the aligning device so that a sheet bundle stacked on the processing tray is aligned at a position being apart from the second binding device by a predetermined distance before the sheet bundle is bound by the second binding device.