Image encryption method, image encryption device and electronic device

The invention provides an image encryption method, an image encryption device and an electronic device. The method comprises the steps that an original image is acquired, the original image is segmented, a plurality of original image blocks are obtained, and the original image at least comprises identity information of a user; historical image blocks and classification results corresponding to the historical image blocks are obtained, the multiple original image blocks are input into a classification network, the classification results corresponding to the original image blocks are obtained, the classification results are used for representing the importance degree of the original image blocks in the original image, and the historical image blocks are obtained by segmenting the historical image; the historical image is an original image acquired before the current moment; according to the classification result, determining a corresponding predetermined chaotic encryption method, any two predetermined chaotic