The historical development of CAD technology is reviewed and the importance of using CAD technology in mining design is discussed. The commonly used CAD software systems and application models are introduced in the paper.It is the autor's idea that MPCAD and MCAD technologies can be used to analyze some field problems, reduce labour force and shorten design and research period.When CAD is used in mining engineering, the available softwares can be made up into one model block and working modes of CAD's model 2 or model 3 can be adopted,making the MCAD technology highly efficient, cost effective and accurate.