This paper starts with the technology of virtual tourism, explores the principle of virtual reality technology, summarizes the main features of the technology, and constructs a user experience model for evaluating tourists’ virtual cruise tourism experience. Taking the cruise passenger cabin as a three-dimensional modeling object, combining 3DMax software with polygonal modeling methods, the cruise passenger cabin is reconstructed in three-dimensional models. Using the point cloud data simplification method, the neighboring point location data structure information is simplified and processed, and the reconstruction of the virtual cruise ship is completed by Fast global alignment, which fuses the point cloud data information after the point cloud alignment. Using the DEMATEL-ISM technique, four influence relationships affecting the elements of the virtual cruise tourism experience are derived. In which the elements with higher centrality are S22, S19, S20, S14, S15 and S18, and the centrality values of these elements are 2.483, 2.193, 2.131, 2.047, 2.046, and 2.03. Using the before-and-after comparison analysis the Evaluate the effect of tourists’ experience of virtual cruise tour, the sensory experience related to the basic design and the functional experience index related to the spatial functional arrangement are improved by a high level, which is 41.78% and 33.54% respectively, and the tourists have a better sense of experience.