Fecha de publicación: 09/02/2024 Fuente: Wipo "BigData" The invention provides a big data transaction log processing objection method and system based on a block chain in the technical field of big data transaction management, and the method comprises the steps: S1, uploading the sample data of big data to a server after a seller client carries out the right authentication of the big data, and carrying out the evaluation of the sample data through the server; s2, the seller client side executes a putaway operation based on the evaluation information; s3, the buyer client performs a fusion test based on the sample data, issues a purchase order to the big data, signs an electronic contract, and pays the fee; s4, the server updates right authentication information, sample information, valuation information, shelving information, test information, purchase information, contract information and payment information to a big data transaction log and synchronizes the log to the block chain; and S5, when an objection is generated, sending objection information to a server so as to match the big data transaction log to execute objection processing. The big data transaction objection processing method has the advantages that the convenience and reliability of big data transaction objection processing are greatly improved.