The present invention relates to a method for correcting a 3D scanning error of a foot and a method for generating a 3D model of a foot by the method. The foot 3D scanning error correction method includes the steps of setting positions of a laser and a camera; Moving the laser and the camera along a preset path; detecting upper and lower displacements of the laser and camera according to the movement; correcting the position of the laser or camera according to the detection resu setting each individual coordinate system according to the detected upper and lower displacements; Checking whether each individual coordinates match; and generating a common coordinate system according to the confirmation result.
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