The invention provides an image reconstruction method and device based on an example. The method comprises the following steps of: dividing a first image to be converted into first image blocks with the size of r*r, wherein r belongs to an element in a preset set K; dividing a preset target style image into second image blocks with the size of r*r; obtaining the target second image block of each first image block; fusing the target second image blocks of all first image blocks, reconstructing the target style image of the first image, and taking the target style image of the first image as a converted second image; obtaining the second image corresponding to each element r in the preset set K in sequence; and adopting a multi-level fusion strategy to fuse all reconstructed second images to obtain the target style image of the first image used for output. By use of the method, the structure information and the texture information of the input image are used for realizing the target stylized reconstruction of the image so as to optimize the stylized reconstruction effect of the image.