It is aimed at the problem of impairing dependency of noised digital image, the paper gives an improvement of JPEG encoding compression: whereas noise model of dital image, coding the image with JPEGs basic system after weakening noise process of image. 针对含有噪声的数字图像去除相关性差的问题,鉴于数字图像的噪声模型,对图像作去噪处理后再用静态图像压缩标准JPEG基本系统作图像压缩编码。