While online social media has flourished in recent years, multifarious social networking sites are springing up. Therefore, this study intends to take the travel platform as an example to explore the influence of consumers' participation and perceived value through social media on their purchase intention of domestic tourism commodities. This study takes consumers who have used the travel platform as the research object, conducts a random sampling survey, and uses SPSS software for hierarchical regression analysis.The results show that: (1) Consumers' participation in social media has a significant positive impact on purchase intention. (2) Consumers' participation in social media has a significant positive impact on perceived value. (3) Consumers' perceived value has a significant positive impact on purchase intention. (4) Perceived value has a partial mediating effect on consumers' participation in social media that influences the purchase intention.