To provide a work table for a boring device capable of performing the control action of a workpiece with high accuracy without vacuum destruction, and the boring device.

Even if very small bending deformation is partially generated in the workpiece W, air suction chambers 5, etc., are divided into blocks to prevent vacuum destruction. After a working object part (target mark) is moved to be put into a monitor screen, the workpiece W is attracted and fixed by intake air from air intake holes 15, etc., communicated with the air suction chambers 5, etc., divided into blocks except parts corresponding to the bent and deformed parts when attracting the workpiece W. The control action of the workpiece W by centering data is performed with high accurate.