This innovative 3D avatar diffusion model is an artificial intelligence framework designed to create exceptionally detailed digital avatars in three dimensions. Users can explore the resulting avatars from all angles, enjoying an unprecedented level of quality in their visuals. By significantly streamlining the traditionally intricate process of 3D modeling, this model paves the way for new creative possibilities for 3D artists. It generates these avatars utilizing neural radiance fields, leveraging cutting-edge generative techniques known as diffusion models. The approach incorporates a tri-plane representation to effectively decompose the neural radiance field of the avatars, allowing for explicit modeling through diffusion and rendering images via volumetric techniques. Moreover, the introduction of 3D-aware convolution enhances computational efficiency, all while maintaining the fidelity of diffusion modeling in the three-dimensional space. The entire generation process operates hierarchically, utilizing cascaded diffusion models to facilitate multi-scale modeling, which further refines the intricacies of avatar creation. This advancement not only changes the landscape of digital avatar production but also enhances collaborative efforts among artists and developers in the field.