In view of the current domestic panoramic roaming technology compatibility and poor implementation efficiency, this study proposes a panoramic technology based on WebGL, which eliminates the installation of rendering plug-ins. The system is more lightweight and has lower computer resource usage. Firstly, data is collected by combining the aerial photography by unmanned aerial vehicle and ground point shooting. Then, image splicing process is performed with scale-invariant feature transform. Finally, WebGL technology is adopted to combine with specific HTML5 framework to add scenes and make hot data, which are uploaded to the server to complete the publication. It is successfully applying to Guiping smart tourism construction project. Through this system, users can enjoy the scenery of scenic spots on the online virtual tour, and experience the immersion of panoramic roaming.