Along with building decoration industry and stone industry development, special-shaped stone equipments develop to high speed and efficiency, intelligent, compound function directions. Special-shaped stone multi-function compound machining center was designed, realized stone turning function and carving and milling function compound in a perpendicular saddle, analyzed machining center motion function. Kinetic simulation research on machining center was performed using COSMOSMotion, tracked spindle tool output displacement, speed and acceleration data by trajectory tracking, indicated mathematic model correct. Structure design was optimized through analysis of crossbeam and bed. This had important practical value to dynamic design of NC equipment and prototype research.