Abstract: Based on the nuclear power project under construction, a three-dimensional visualized reinforcement system for nuclear power containment is designed and developed on the basis of PDMS which is an international general plant design software, and a digitized reinforcement algorithm is studied. The visualization, digitalization and automation of reinforcement design of containment shell are carried out by program-driven reinforcement calculation equation and based on 3D data to realize the highly efficient output of engineering data such as two-dimensional drawing. The application of the research results in the project not only improves the accuracy and efficiency of the three-dimensional design, but also greatly improves the design quality, which has a certain significance of popularization for application.