At present, in the teaching process of NC technology in major universities, there are more or less problems in the teaching practice. In view of the current problems, the combination of embedded technology and numerical control technology was put forward. using ARM microprocessor and special motion control chip program,a desktop engraving machine system that integrated a set of G code storage and processing, offline simulation and online control functions was designed and developed . The functional integration and structural separation of the hardware level guaranteed the reliability and reconfigurability of the motion control system. At the software level, modular and multitasking programming modes were used to ensure the functionality and scalability of the motion controller. The Practice proves that the desktop carving system program is feasible, stable operation, low price and has a certain reference significance.