Data monitoring method and device for smart contract, equipment and storage medium

The invention is suitable for the technical field of block chains, and provides a data monitoring method, device and equipment of a smart contract and a storage medium, the data monitoring method comprises the following steps: in a process of executing an operation code by a smart contract virtual machine, identifying a marked to-be-monitored data object; and if the state change of the to-be-monitored data object reaches the preset data object monitoring condition, recording the data content after the state change of the to-be-monitored data object. The state of the to-be-monitored data object is monitored by identifying the data object, so that the potential contract risk can be found and dealt with in time, and the contract safety is improved. According to the method, the intelligent contract fault or loss caused by wrong data or malicious operation is prevented, the safety and reliability of the intelligent contract are enhanced, and monitoring and analysis of the intelligent contract on execution details