Due to the impact of the epidemic, offline exhibitions and exhibitions have been hit, and have been suspended, delayed or moved online. Virtual exhibition halls are now being developed and improved. Visitors to exhibition halls are no longer limited to the local area, but more visitors come from all over the country or even abroad. Therefore, pavilions with remote tour function become very important. This paper firstly studies the application trend and preliminary practice of digital design in the field of virtual exhibition hall at home and abroad from the perspectives of 3D modeling technology and virtual exhibition hall construction. Secondly, it expounds the characteristics of 3D experience in virtual exhibition hall from three aspects of immersion, interactivity and conceivability, and compares virtual exhibition hall with traditional exhibition hall to summarize the advantages and potential of virtual exhibition hall. Then, the basic analysis and comparison of 3D modeling software is done, and the effect of blender and unity on the construction of virtual exhibition hall is described. Finally, the virtual exhibition hall is applied in the inheritance and dissemination of Chu embroidery, and the virtual exhibition hall of Chu embroidery is designed in detail.