文章除了对基于DCT的图像压缩编码进行研究外，还对基于其他算法的图像压缩编码也作了相应的研究。在完成理论方面的研究后，应用MATLAB仿真软件，实现了基于DCT的图像压缩编码。-The article is in addition to picture that according to the DCT compress coding expatiating, returning to picture that according to other calculates way empress coded to also make the homologous introduction, make discuss more detailed with completely. At study that complete the theories empress, apply the MATLAB imitate true software, realizes according to the DCT picture compresses the coding.