Data management method and data management system

The invention provides a data management method, wherein a data transaction monitoring unit is used in the method, and the data transaction monitoring unit executes the following steps of: A, querying user data information; B, judging whether the user data information is changed, if so, executing a step C, and otherwise, returning back to execute the step A; C, recording the changed information of the user data information; D, storing the changed information. The data management method has the beneficial effects of automatically monitoring data change transaction, such a function can greatly facilitate the management and monitoring work to the user effective information for the enterprise administrators, the change process of the data information can be recorded for the operations, such as checking, recovering raw data information and so on, and the safety of the system can be enhanced.