Abstract: In order to restore destroyed images，this paper mainly observes the two important characters，the gradient and the curvature of the isophotes，and discusses their function in inpainting process.Furthermore，a novel algorithm is introduced for digital inpainting of destroyed images based on total variation.The results show that in contrast with previous approaches，CDD for example，the new model restores the information of the destroyed area better and connects the broken level sets smoother and natural.