VS2010 software was used to develop a CNC cutting machine demonstration model subsystem. The system can be used to control the CNC cutting machine to carry out automatic cutting motion. Users only need to select required cutting graphics, and set relevant parameters, then through this system can control automatic cutting movement of the cutting machine. Current processing and graphics can be displayed in the cutting process, current cutting position and cutting speed can be displayed realtime as well as the states of current import and export. 