Objective/Meaning  Geological tourism is one of the tourism activities with the most natural and humanistic characteristics in China. It is of great significance to explore the internal factors affecting the tourism image of geological parks for the development of geological tourism industry.

  Methods/Procedures  Based on the network comment texts of three online tourism platforms, such as Ctrip, Meituan and Tongcheng Tourism, the tourists’ perception of the tourism image of Taimu Mountain National Geopark was analyzed with the help of ROST CM content mining software and content analysis method.

  Results/Conclusions  The results showed that: 1) the geological heritage landscape was the most significant feature of Taimu Mountain National Geopark, and it was also the core part of the tourists’ cognition of Taimu Mountain; 2) The semantic network of Taimu Mountain online review text presented a three-layer structure of “center-subcenter-edge”. The central layer was closely connected by the geological relic words; 3) The emotional tendency of tourists was dominated by positive emotions, and Taimu Mountain has received good feedback from tourists. After the comprehensive analysis of the negative factors affecting the tourism image of Taimu Mountain, the following strategies were put forward including: 1) building the geological landscape tourism destination with unique local characteristics to realize “seeking common ground while accepting the existing differences”; 2) integrating the development with the surrounding resources to enrich the tourism types and activities; 3) strengthening the personnel training and operational supervision to improve the management level of tourism services.