The invention relates to a self-adaptive resolution image processing method and device. The image processing method comprises the steps of obtaining the source image; converting the low voltage differential signal of the source image into a TTL signal; processing the TTL signal and forming data blocks in specific size, and conducting reduction processing on the data blocks when the data blocks aretransmitted to the destination. The invention is advantageous in that the source image is processed into data blocks in specific size, and the data blocks are analyzed and undergoes reduction to thesource image when the data blocks are transmitted to the destination, and thereby front-end images with various resolutions can be transmitted at rear end, and great convenience is brought to the user.