To reduce personnel exposure during the COVID-19, and encourage development enterprises to use the Internet, virtual reality(VR)and live sales and other non-contact ways to carry out online real estate display. It is recommended that based on the BIM model, the IFC standard of BIM model is transformed into 3D Tiles standard for network transmission. This method is mainly divided into three steps: IFC-OBJ, OBJ-glTF, and glTF-3D Tiles. The open-source platform Cesium is selected as the framework to load the BIM model, which realizes the quickly loading of BIM models on Web, and reduces the loss of geometric information and attribute information, and provides a new marketing scheme for development enterprises.