Abstract: In order to display panoramic video immersively,a panoramic video display system based on CAVE is developed.And the pgr file contained panoramic video data can be displayed on the CAVE successfully.Firstly,every panoramic image from the video is mapped to a virtual spherical surface.Secondly,five virtual cameras are used to capture image from the sphere.In order to include the whole spherical surface and mosaic these images seamlessly,parameters of these cameras should be set correctly.Finally,these five images are projected to screen of CAVE separately.In addition,input devices,such as mouses and joypads,can be used to adjust the picture in the screen.