Abstract
A great deal of research has been carried out on the sustainable use of urban underground space, among which the importance of urban underground public space to urban development has been well proven. However, at present, most of the urban underground public spaces are constructed with the goal of supplementing the surface business, which leads to a large number of unused underground public spaces and low utilisation rate. Spaces rich in thematicity tend to have a higher attraction to the public, but many studies at this stage focus on the improvement of the physical environment of underground spaces, and there are few assessments of the thematic shaping of underground public spaces. Therefore, this study adopts the importance-satisfaction (IPA) model and takes the underground shopping mall of Zilinan-Fountain in Guiyang's old town as the research object to examine the relative relationship between the importance level of each evaluation element and the satisfaction of the crowd, and then to derive the factors that need to be focused on improvement. The analysis shows that the restoration and construction of special thematic scenes, the types of thematic businesses, the regular organisation of thematic activities or curatorial exhibitions, the number of resting seats, the clarity of the main axis of the space, the monitoring of the regional traffic flow, and the size of the area of the shared gathering space are the objects that need to be highly paid attention to, and can be improved to perfect the thematic creation of the underground public space.