Abstract:The concept and method of graphics computational mechanics which integrates computational mechanics,computer graphics and modern AutoCAD technology,are proposed firstly. By making use of the mature theory,method of computer graphics and 3D modeling platform supported by modern AutoCAD technology,the rock can be cut into combination entities of a certain direction,a certain size,a certain shape and feature. The analysis of discontinuous deformation characteristics,such as main features of the graphical entities,attributes,mutual contacts,the embedded location and extent can be directly judged or calculated from the graphics. And then it can be applied to a variety of numerical methods. Compared with the existing methods,it is more intuitive,simple and reliable. Its combination with virtual reality technology will make the graphics computational mechanics a whole new area of development and greater value of its applications.