The purpose of this study is to explore the mechanism of the impact of crime safety in mountainous parks, propose corresponding methods for optimization of environmental safety design, and provide references for the research and governance practice of recreational space safety in mountainous parks in China. The theory of Crime Prevention Through Environmental Design (CPTED) is introduced to construct an evaluation index system for the safety of recreational space in mountainous parks from six aspects: sense of territory, surveillance, entrance control, maintenance of environmental image, activity support, and target reinforcement. Spatial annotation, in-depth interviews, questionnaire scales, and factor analysis are used to verify the importance ranking of the above elements in influencing the safety of recreational space in mountain parks. Through the sample analysis of Hong'en Temple Park in Chongqing, it is found that the main spatial influencing factors leading to crime safety problems in mountainous city parks are the ambiguity of public areas, poor environmental maintenance, lack of visual surveillance, insufficient spatial guidance, excessive number of entrances, and uneven distribution of activities. In the construction and governance of mountainous parks, the safety of recreational space can be improved by strengthening the sense of territory in public areas, enhancing the maintenance of green plants and the site, strengthening spatial guidance signs, strengthening boundary management, optimizing site layout, and holding diverse activities.