To provide a lens hole processing tool capable of easily and accurately performing boring work in a spectacle lens.

This lens hole processing tool A bores and processes an installation hole H in a lens L, and has a guide body B having a leg part B3, and attached with a sleeve B1 guiding a blade D of a boring tool to a boring position H of the lens L, a fitting hole C1 fitting and fixing the lens L, and a lens holder C forming a leg part fixing hole C2 for detachably positioning and fixing the guide body B by installing a leg part B3 of the guide body B. An orbit of the blade D of the boring tool is adjusted to a forming position of the installation hole H of the lens L, by installing, positioning and fixing the leg part B3 of the guide body B in the leg part fixing hole C2 of the lens holder C.