Ancient village architecture, as a special kind of cultural heritage, is the root and soul of the history and civilization of the Chinese nation, and its survival status and protection and utilization in contemporary times have been widely valued and paid attention to by all walks of life. The article establishes a digital conservation model of Fuzhou village architecture based on digital technology, and constructs a digital interactive space of ancient village architecture in Fuzhou based on this model. In order to enhance the interactive experience, the article uses UAV inclined photogrammetry to obtain the point cloud data of ancient village buildings in Fuzhou, and constructs the three-dimensional model of ancient village buildings in Fuzhou by combining the point cloud simplification and denoising algorithm with the ICP point cloud alignment, and optimizes the rendering by using 3Ds MAX software. In order to verify the effect of digital interactive space on spreading the traditional style of ancient village buildings in Fuzhou, the 3D reconstruction effect of ancient village buildings is quantitatively analyzed by taking the ancient villages in Jinxi County as an example, and the interactive experience effect of the digital space of ancient villages is discussed. The average accuracy of the 3D model of ancient villages reaches 92.22%, the fluctuation range of completeness is between 88.78% and 95.83%, the immersion of subjects in the experimental group is extremely significant difference compared with that of the control group (P<0.01), and the mean value of the users' scores in the effect of cultural dissemination reaches 4.57 points. Combining the digital technology of modern media communication with the traditional style inheritance of ancient village architecture in Fuzhou helps to realize the living inheritance of ancient villages in Fuzhou.
