As a new form of assets，data assets have become an important part of resource allocation. Web 3.0，as a digital economic value network with blockchain as its core technology，provides a network trust system based on “digital contract” for data assets transactions，which can effectively support data assets transactions and realize the value of data. Data assets trading involves the interoperability and integration between internal and external systems in the industry，while the traditional interoperability and integration technology between systems is facing many challenges under the realistic conditions of explosive growth of data scale，increasingly rich data types and application architectures，and the technology system oriented to meet business needs is constantly changing and innovating. Therefore，based on Web 3.0，this report studies the technologies and achievements related to interoperability and integration between data assets trading systems，and forms the data assets trading integration architecture and blueprint data structure，so as to promote the safe circulation of data assets and release the value of data.