Research of the tourism carrying capacity of vegetation is important to strengthen the ecological management of mountainous scenic areas and promote sustainable development. Based on relevant studies at home and abroad, this article constructed an evaluation index system of the tourism carrying capacity of the community from four aspects:the vertical structure, the horizontal structure, the life-form spectrum, and the renewal ability of plant community. Various quantitatively ecological methods such as Two-Way Indicator Species Analysis (TWINSPAN) and Detrended Correspondence Analysis (DCA) were used to measure the tourism carrying capacity of forest vegetation in Wutai Mountain scenic area. The results show that:① based on the classification results of TWINSPAN, the forest communities in Wutai Mountain can be divided into the type with many seedlings and some shrubs, the type with few seedlings and some shrubs, the type with many seedlings and no shrubs, the type with few seedlings and no shrubs, the type with some shrubs and sprouts, the type with some sprouts and no shrubs, the type with very few sprouts and some seedlings, the type with no seedlings and no sprouts. The types of each group were transited gradually from good to poor ecological environment. ② The measurement results of the tourism carrying capacity of the community showed that 43 samples were not overloaded, 37 samples were overloaded, and the total overload rate was 46.25%. The overloaded samples were mainly affected by the tourism interference around the temples and villages. ③ The principal geographical factors affecting the change of tourism carrying capacity of the community could be identified by the Pearson correlation analysis method, such as altitude, slope, slope position, slope shape, and aspect. Among them, the slope shape was significantly positively correlated with the tourism carrying capacity of the community, the aspect was significantly negatively correlated with the tourism carrying capacity of the community, and the rest of geographical factors were positively correlated with the tourism carrying capacity of the community. In addition, some targeted control strategies were pointed out for vegetation protection and ecological management in Wutai Mountain scenic area.