Fecha de publicación: 12/04/2024 Fuente: Wipo "BigData" The invention relates to the technical field of tag construction methods, and discloses a tag construction method based on a block chain and big data analysis, and the method comprises the steps: 1, building a tag storage region on the block chain, and enabling the tag storage region to be used for storing tag information related to an entity; 2, through fusion of an artificial intelligence technology and a distributed account book technology, decentralization and non-tampering of label information are ensured; and 3, extracting related features from the multi-source data through a 5G technology and a big data analysis technology, and providing basic data for label contents. Through fusion of an artificial intelligence technology and a distributed account book technology, the management and decision-making process of label information can be more intelligent and automatic, and deep analysis of data is optimized according to a machine learning model, so that the system can better adapt to continuously changing situations and can make decisions more accurately, and the system is suitable for large-scale popularization and application. And the efficiency and intelligence of the label system are improved.