Situation awareness method based on block chain private transaction and related device

The embodiment of the invention provides a situation awareness method based on block chain private transactions and a related device, which are used for situation awareness of abnormal transactions of a block chain data layer. The method provided by the embodiment of the invention comprises the following steps: a group master node decrypts a block to obtain plaintext instructions corresponding to all transaction information in the block; the situation awareness client node obtains plaintext instructions corresponding to all transaction information in the block and a preset smart contract; the situation awareness client node sends the plaintext instructions and the intelligent contracts corresponding to all the transaction information to all the situation awareness nodes, so that all the situation awareness nodes vote for judging whether each piece of transaction information belongs to abnormal transactions or not; and if the number of nodes with consistent voting results for each piece of transaction informat