VR and AR not only expand the art field, but also enrich the form and content of digital media art and promote the development of digital media art. This paper proposes a 3D reconstruction of media art scenes based on the improved Neural Radiation Field (NeRF) technology and then completes the style migration, through which a unique scene art effect is formed, with a view to exploring new ways for the development of new digital media art forms. In the virtual orchard construction, the PSNR value of the optimized NeRF method is improved by 0.205, the SSIM value is improved by 0.015, and the LPIPS value is reduced by 0.018 compared with the state-of-the-art method, which can be concluded that the optimized NeRF method has a good image synthesis effect.