Abstract: This paper takes the CNC training course carried out by the Modern Engineering Training Center of Chang' an Univer-sity as the research object,and expounds the main content and effect of the hierarchical CNC training in the engineering training prac-tice teaching. Selectively carrying out hierarchical CNC training for students of different majors can not only broaden students' hori-zons,but also effectively improve students' enthusiasm and initiative in participating in engineering training practice teaching. The stu-dents' engineering practice ability and the teaching staff's professional level can be effectively improved,and the quality of engineer-ing training practice teaching is effectively guaranteed.