Abstract: There is provided a processing apparatus and an optical member manufacturing method that can improve the figure accuracy and the waviness accuracy, and can highly and precisely process an optical element surface. A processing apparatus generates a pressure between a polishing member and a workpiece and relatively moves the polishing member and the workpiece to process a workpiece. The processing apparatus includes a support member that can perform oscillating movement, and a processing portion that is rotatably attached to the support member. The processing portion includes one or more pressure generation units to generate different pressures between the polishing member and the workpiece.