With the rapid development of industrial technology

the requirements for machine tools and production systems are mostly focused on energy saving and green development

which brings new challenges to designers of machine tools. Lightweight technology not only saves a lot of materials

but also optimizes the performance of machine structure

which creates favorable conditions for the development of high-performance CNC machine tools. This paper describes the application of lightweight technology in CNC machine tools

discusses the influence of lightweight design method on green cycle manufacturing and its sustainable development of CNC machine tools. It also emphatically analyzes the effective methods and technical means to achieve the goal of lightweight design of CNC machine tools. Finally

it prospects the development prospect of lightweight technology in CNC machine tool design

and puts forward some suggestions.