Objective To study the behavioral intention and influencing factors of tourists on traditional Chinese medicine(TCM) health tourism in Yunnan, and to provide reference for the rapid development of TCM health tourism in Yunnan. Methods Based on an extended theory of planned behavior model, the behavioral intention model of Yunnan TCM health tourism was constructed. The snowball sampling method was adopted to form a network questionnaire by using the professional online survey platform: Questionnaire Star(https://www.wjx.cn/). Through WeChat, tourists in different regions were invited to send the questionnaires to their WeChat group. The structural equation model is used to analyze the theoretical model. Results The study found that TCM health tourism attitude(b=0.646, P<0.001), TCM health tourism subjective norms(b=0.422, P<0.001), TCM health tourism perceived behavioral control(b=0.320, P<0.001) had significant positive influence on Yunnan TCM health tourism behavioral intention. Perceived value(b=0.618, P<0.001) had a significant positive impact on the attitude towards TCM health tourism, while perceived risk(b=-0.005, P=0.612) had no significant negative impact on the attitude towards TCM health tourism. Conclusion Only by fully understanding tourists' expectations, meeting their health needs, improving the quality and service level of TCM health tourism in Yunnan, and strengthening publicity, can more people be willing to participate in TCM health tourism in Yunnan.