This study explores the application of three-dimensional technology in the digital display of ancient clothing, aiming to build a virtual clothing exhibition hall through virtual simulation technology, three-dimensional modeling technology and virtual reality technology. First, 3D Max is used for polygon modeling, surface subdivision modeling and Nurbs surface modeling to build a model, and a virtual clothing showroom is built through UVW mapping (defining the mapping of 2D texture coordinates to the 3D model surface), renderer and lighting rendering technology. Then, based on the outline of ancient clothing, a three-dimensional clothing model was constructed. By drawing structural curves and plane pattern design, virtual simulation technology was used to sew the pattern to restore the clothing of ancient characters. In addition, the article also uses Unity 3D combined with VR and AR technology to build a virtual interactive system to realize the interactive display of clothing in the virtual exhibition hall, and conducts a comprehensive fuzzy evaluation of the effect of restored clothing. This research not only demonstrates the application potential of three-dimensional technology in the field of cultural heritage protection and display, but also provides a new perspective and technical path for the research and digital display of ancient costumes.