An image deformation method and an image deformation device are provided. The method includes: acquiring an original image, and acquiring a target shape; deforming the original image into a target image based on a ratio of deformation at a center of the original image to deformation at an edge of the original image, wherein the further the edge of the target image is away from the center of the target image, the greater a deforming degree of the edge of the target image is, and a shape of the target image is the target shape; and displaying the target image.