1. A method for image compression in a user equipment, wherein the method comprises the following steps: a. determining maximum image reduction information after compression of a plurality of images to be compressed, based on predetermined compression lower-limit information of the images to be compressed and image size information of each of the images to be compressed; b. determining compression parameter information of the plurality of images to be compressed based on the maximum image reduction information; c. determining compression ratio information of each of the plurality of images to be compressed based on the compression parameter information, the image size information and maximum image reduction information after compression of each of the plurality of images to be compressed; d. compressing each of the plurality of images to be compressed based on the compression ratio information; e. adding the compressed images into a message to be transmitted for transmission.