The level of satisfaction is the main manifestation of tourists’ perception of the image of the scenic spot. With the help of non-invasive online texts, users’ tourism feelings can be dynamically and truly reflected, promoting the sustainable development of scenic spots. This paper takes the representative city memorial site, the core scenic spot of the Sun Yat-sen Mausoleum in Nanjing, as an example. First, it captures the online UGC text data generated by tourists in scenic spots with the help of octopus collectors. Then, it delimits the range of impact factors based on high-frequency words and network semantics. Then, it uses the Grounded theory to code the landscape perception elements and constructs the satisfaction evaluation model of urban commemorative places. Finally, it uses the fuzzy comprehensive evaluation method to calculate the satisfaction scores of various factors in memorial places. The results show that the overall perceived satisfaction of The Sun Yat-sen Mausoleum scenic spot is “satisfaction”, but there is a large difference in the perceived satisfaction of tourists with the various elements of the scenic area. Among them, “cultural landscape” has the highest score, but “traffic reachability” and “service facilities” have low scores, so it needs to be improved first. The aim is to explore the core scenic spot of the Sun Yat-sen Mausoleum from the perspective of tourists as a basis for improving its existing environment, improving service facilities, and creating a commemorative atmosphere, providing a theoretical reference for the subsequent optimization of the scenic area.