To effectively reflect mechanism calibration when using a control point except for a calibration point and plural work effectors.

A work effector correction storage means 10 is provided for storing a correction value on the calibration point on the work effectors among a robot calibration correction value determined by an arithmetic unit 2 in relation to a name of the work effectors, and a mechanism calibration value determined to a calibration object point is recorded as a mechanism calibration value of the work effectors. Thus, a robot mechanism correction value determined to the calibration object point set on the work effectors can be treated as the correction value to the work effectors, and since a correction effect can be reflected on the whole work effectors, calibration work time can be shortened.