The invention provides an image processing method and device, a mobile terminal and a storage medium. The method comprises the steps of obtaining a plurality of images to be processed; selecting a target image in the plurality of images as a reference image; determining a color change amount between each comparison image and the reference image, the comparison image being one of the plurality of images; and screening a predetermined number of images from the plurality of images based on the color variation corresponding to each comparison image. According to the technical scheme provided by the embodiment of the invention, the image with the maximum color variation can be screened out, so that the dynamic instant image can be accurately obtained.