With the continuous progress of science and technology, the digital reconstruction technology of architectural space has not only become a research hotspot, but its application demand also shows a significant growth trend. The traditional two-dimensional modeling technology has been difficult to meet the current demand for accurate architectural space modeling. In this paper, digital modeling technology is applied to set the shape parameters of the building space, and the solid shape of the building is designed through 3D modeling technology. Using OpenGL virtual reality technology, based on the acquired mathematical model of the target building space, the target building is extended and processed to design a more realistic three-dimensional virtual effect of the building space. Evaluating the results of the application of digital technology in the design of architectural space, among the eight house types, the K house type has the lowest K value of 0.7165.The house types with high average distance coefficients have a K value in an intermediate range, with an interval of 0.8465 to 0.9048.In the evaluation of the user experience, the average value of each score of the user experience of the architectural space is more than 90, which indicates that the architectural space is good for user experience.
