To provide a framing device for spectacle lenses capable of producing a spectacle frame which is improved in workability at the time of transmitting the shape information of the spectacle frame and simultaneously has clean worked surfaces.

This framing device has a shape inputting means 1 of the spectacle frame, an arithmetic means 2 for interpolating the inputted spectacle frame shape add a boxed lens working means 3 for working the spectacle lenses to the spectacle frame shape in accordance with the interpolated spectacle frame shape. In such a case, the frame shape data sent from this shape inputting means 1 is the information below 1000 points of the frame and is sent to the boxed lens working means 3 after the information is interpolated to ≥5000 points by the arithmetic means 2.