On the basis of investigating the characteristics of the appearing color of CRT monitor and output device, in this paper, color space conversion between Device-Dependent color space and Device-Independent color space are made for monitor, color ink jet printer respectively; 在对CRT显示器、彩色喷墨打印机的呈色特性研究的基础上,本论文分别实现了显示器、打印机设备相关色空间与设备无关色空间的正反变换;