LanPaint is an image inpainting plugin for stable diffusion models. Through multiple rounds of iterative inference, it can achieve high-quality image inpainting without additional training. The importance of this technology lies in its provision of a solution that allows users to obtain accurate inpainting results without complex training, greatly reducing the barrier to entry. LanPaint is suitable for any stable diffusion model, including user-defined models, and has wide applicability and flexibility. It is mainly aimed at creators and developers who need high-quality image inpainting, especially those who want to get quick inpainting results without additional training.