Web 3.0 technology and smart tourism have a natural fit mechanism，which can build a foundation of trust in tourism，stimulate the intelligent revolution of tourism，and provide safe and efficient services. In the field of smart tourism，relying on the integrated framework of “cloud intelligence chain”，we can innovate and create an open technology system with Web 3.0 technology as the core. This system combines the application framework of blockchain and artificial intelligence，takes cloud service as the main carrier，and aims to improve the data processing，analysis and decision-making capabilities of the tourism industry，while ensuring the security，transparency and immutability of data. The application of Web 3.0 technology in smart tourism runs through the entire industrial chain：for regulators，the efficiency of smart tourism public service platform can be improved through digital identity platform，digital asset platform and smart tourism brain；for resource parties，a trusted ecology of smart tourism industry can be created and digital operation efficiency can be improved through trusted transactions and content generation；for channels，transaction traceability and digital pledge can be used to solve pain points such as difficulty in distinguishing between true and false，selling inferior goods as good ones，and financing difficulties and high financing costs；for consumers，the interaction between virtual tourism and physical tourism can be realized through the metaverse，and the combination of UGC and AIGC can be realized through generative tourist short videos. In short，the application of Web 3.0 technology in smart culture and tourism can provide a “package” solution to the common needs of the industry and promote the cultural and tourism industry to accelerate its entry into the Web 3.0 era.