In today's society, the importance of data at the policy, economic, social and technical levels has gradually become prominent, helping countries and enterprises to make overall and systematic decisions and promote high-quality economic development. Data is transformed into elements after a series of processes, and data elements have become an objective requirement for the development of the digital economy. Among them, data standardization is the basic link of data transformation into data elements. However, the current data standardization work lacks systematic planning. Cross-industry and cross-enterprise global information interconnection and intercommunication capabilities. In this paper, we proposes a distributed data identification and resolution system based on blockchain, eliminates central nodes, establishes a decentralized peer-to-peer network, and assigns a unique readable identifier to each data, so that each data is configured with a globally unique "ID card". At the same time, according to the structural characteristics, security attributes, business attributes and other content of the data itself, a more complete description information is established for the data.