To provide a method for simply boring a through hole in an elliptic shape over a lens, and provide a device to be employed by the aforesid method.

This is concerned about a method for boring a through hole 14 in an elliptic shape over a lens 12 for eyeglasses, this boring method is equipped with a step for positioning the lens 12 at a specified position to locate the boring portion of the lens 12, a step for cutting the boring portion of the lens 12 by a cutting body 150 disposed at the specified position and boring an initial through hole 164 over the lens 12, and with a step for moving and guiding the positioned lens 12 by a specified distance in the direction of the major axis of the through hole in an elliptic shape.