Computer tomography artifact correction method and device

The invention discloses a computer tomography artifact correction method, and the method comprises the steps: receiving a to-be-corrected image; carrying out the artifact correction of the to-be-corrected image, so as to obtain a first corrected image; obtaining an error image of the to-be-corrected image relative to the first corrected image; obtaining the information entropy of the first corrected image according to the error image, and determining the degree of artifact introduction of the first corrected image according to the information entropy; adjusting the weight of the error image according to the degree of artifact introduction of the first corrected image, and removing the error image from the to-be-corrected image after weight adjustment, so as to obtain a second corrected image. The method and device can effectively inhibit the new introduced artifact on the basis of a conventional artifact removal method, and further improve the image quality.