Fuente: Wipo "BigData" The invention provides a big data transaction security management and control method in the technical field of big data transaction. The method comprises the following steps: S1, performing real-name authentication on each client; s2, the seller client sets transaction information of big data and puts the transaction information on the shelf; s3, the buyer client sends a test order purchase request to the seller client based on the transaction information; s4, the seller client selects a data sample and sends the data sample to the server cluster; s5, the buyer client performs a fusion test on the data sample; s6, the buyer client sends a big data purchase request to the seller client based on the transaction information; s7, the seller client selects corresponding big data and sends the big data to the server cluster; step S8, the server cluster delivers the big data to the buyer client through a federated machine learning technology and a load balancing technology; and S9, the server cluster records the transaction log in real time and executes disaster recovery backup. The method has the advantage that the security of big data transaction is greatly improved.