In response to the development requirements of the 3D exhibition hall of China Southern Power Grid, we provided professional development services for the 3D smart business hall. By the end of 2020, as one of the key projects reported to the Chairman of China Southern Power Grid, the 3D smart business hall is an online 3D exhibition hall that can be accessed via web browsers. It integrates multiple functions such as intelligent robots, business handling, marketing and promotion, and online roaming and viewing. It represents a brand-new form of business exhibition hall, which will be able to better adapt to 5G networks and hardware terminals in the future.