Modularization construction technology for the construction of nuclear power plant is an effective way to shorten the construction period and reduce the project cost.CPR1000,at present with proven construction technology,has been developed for batch construction in China.However,it still has the potentiality for further improvement with respect to the construction period and project cost,and therefore,it has great significance to promote the research on the development and application of the CPR1000 Modularization technology.Relying on CPR1000 nuclear power projects,this study aims to explore the scheme of the module 3D design based on the PDMS,and develop the self-reliant module 3D design system,so as to offer a convenient and effective design tool for the Modularization design in CPR1000 nuclear power projects.The research will provide good reference to AP1000 nuclear power projects.