Fecha de publicación: 20/02/2024 Fuente: Wipo "BigData" The invention provides a big data transaction method in the technical field of big data transaction. The big data transaction method comprises the following steps: step S10, accessing a transaction server by each client to carry out real-name authentication operation; step S20, the seller client uploads sample data corresponding to the big data to a transaction server after the seller client performs right authentication on the big data; step S30, the transaction server evaluates the sample data and sends evaluation information to the seller client; step S40, the seller client sets transaction information of the big data based on the evaluation information, and puts the transaction information on the shelf; step S50, performing demand matching based on the sample data; step S60, the buyer client sends a big data purchase request to the seller client based on the transaction information; and step S70, the seller client draws up a big data transaction contract based on the big data purchase request, signs and backs up the contract, and selects big data for delivery. The method has the advantages that the security, the reliability, the convenience, the flexibility and the transaction efficiency of big data transaction are greatly improved.