Boring jig frock in inclined plane relates to a boring frock, the boring jig frock on a concretely relates to inclined plane. In order to solve work piece inclined plane the punch problem that probably has hole axis slope or drill bit easy slipping's problem. The utility model discloses the jig body is the cylinder form, and one side of cylinder is the plane, and the opposite side is the taper surface, jig body center department leaves there is the central through hole, and the jig body is along circular front face's circumference, even opening has a plurality of sleeve bore in the direction of cylinder, on the cylindrical side of jig body, a plurality of sleeve bore's corresponding position department opens has the fastening hole, guide sleeve includes rotation wall and handle, and the handle sets up on the rotation wall of rotation wall one end surface perpendicularly, guide sleeve sets up in the sleeve bore of jig body, and guide sleeve's rotation wall and sleeve bore are clearance fit, screw top set up the fastening of jig body downthehole and can stretch into sleeve bore in. The utility model is suitable for a drilling on work piece inclined plane.