The invention relates to the technical field of block chain information sharing, and particularly discloses a big data management application system based on a chain number cube. The system comprisesa plurality of chain number cubes, a user achieves data encryption, data storage, data uplink and data access through the chain number cubes, and the chain number cubes perform data interaction through data messages; each chain number cube comprises a data directory, a search module, a data secret box, an intelligent contract, an ETL execution engine, a data lens, an uplink engine and a block chain edge cloud node. According to the technical scheme, the data integration ETL process is combined with the block chain to form a chain type data internet, the problems that data is unknown and uncontrollable are solved, and data integration, data circulation and the like are credible and controllable.