Blockchain transaction risk identification method and device

The invention provides a blockchain transaction risk identification method and device. The blockchain transaction risk identification method comprises the steps of receiving a blockchain transaction bypass request; acquiring block chain data and log data of a block chain transaction corresponding to the block chain transaction bypass request from a block chain network; obtaining risk identification data according to the transaction related data, the data on the block chain and the log data; carrying out preprocessing and feature construction on the risk identification data to obtain risk identification feature data; obtaining a plurality of risk prediction values according to the risk identification feature data and a plurality of risk prediction models; and taking the maximum value in theplurality of risk prediction values as a transaction risk value of a blockchain transaction corresponding to the blockchain transaction bypass request, and determining a risk level of the blockchaintransaction according to t