Abstract: Barton rock mass quality classification Q system is one of the most widely used rock mass quality classification methods at present. Based on Q value, structural parameter selection and support design can be carried out according to Mathews stability diagram and support design diagram. Based on the particularity of logarithmic coordinate system of Mathews drawing and support design drawing, this paper leads to the problems of manual measurement, difficult and cumbersome drawing and heavy workload. By means of programming, the design idea and function are integrated into the program language with visual studio programming language under the hoops platform to realize the development of system program, and the program interface design and drawing function are realized through BCG control. The structural parameter selection and support design software based on Q system can save the manual calculation and drawing value selection process. The structural parameters and support design can be obtained automatically and quickly by the computer and displayed by the program interface, which greatly improves the work efficiency. Combined with the practical application of the mine, this program is simple and reliable, and can provide a certain reference for the application of Mathews diagram and support design diagram.