Intelligent account cancellation method and device based on block chain

The embodiment of the invention provides an intelligent account cancellation method and device based on a block chain, relates to the field of block chains and can also be applied to the financial field, and the method comprises the steps: determining a cash management protocol state of an account in response to a received account cancellation instruction, uploading account information of the account to a block chain verification node in a state that the account has a cash management protocol, so that the block chain verification node initiates a protocol termination request to a block chain consensus node through a smart contract; and in response to a received protocol termination result returned by the block chain consensus node, performing account cancellation on the account, according to the method and the device, the problem that account cancellation cannot be performed due to frequent failure of terminating the financial agreement in the prior art can be solved, the risk of customer complaint caused by