The invention relates to the technical field of information encryption, in particular to an image encryption method and device and electronic equipment. The image encryption method comprises the stepsof firstly, obtaining a first image, obtaining a square original image of which the total number of pixels is an even according to the first image, and building a second image of which the size is the same as that of the original image; secondly, traversing the original image, regarding first pixel points in the original image as reference points to obtain a pixel point area, and mapping positions and pixel values of the pixel points in the pixel point area into a corresponding position in the second image to obtain a third image, wherein the first pixel points are any unmapped pixel points in the original image; then updating the pixel values of the pixel points on the pixel point area in the original image according to each pixel point in the third image, regarding the original image ofwhich the pixel values are updated as an encryption image, and finally outputting the encryption image. By means of the image encryption method, the image encryption efficiency is high.