Abstract: A CAD-based intelligent plotting system model of coal mine roadway rock bolting was developed after analysis of demand, mission, objectives and feasibility. the model based on the object-oriented programming techniques and the development of visualization methods, and was also combined with the practical manufacture of Xiezhuang mine. the development of knowledge base made plotting system intelligent, standard, scientific; the designation of modular structure improved stability of system operation. the interface of this new system is friendly, humanized, simple, and easy for popularization. so it is extremely efficient when applied to engineering practice.