This study focuses on the influence of online texts on Hainan’s sports tourism experience behavior, aiming to explore the specific impact of online texts on Hainan’s sports tourism experience behavior and provide a reference for promoting the development of Hainan’s sports tourism. The study used methods such as text analysis to collect and analyze textual content related to Hainan sports tourism on the Internet. The research results indicate that online text has a significant impact on tourists’ travel decisions, destination selection, participation in sports events, and experience satisfaction. Positive online text can attract more tourists, while negative text may cause tourists to hesitate or give up. The research conclusion is that online text significantly affects the experience behavior of sports tourism in Hainan. Relevant departments and enterprises should attach importance to the role of online text, actively manage and guide online public opinion, improve service quality and tourist experience, and promote the sustainable development of sports tourism in Hainan.