Method and system for data synchronization between foreground and background in ENUM-DNS

A method and system for data synchronization between a foreground and a background in an ENUM-DNS are provided. The method includes: when an account opening/cancellation instruction from an external network element is successfully executed by the background, same notifies account opening/cancellation record information to a service foreground; the service foreground stores the account opening/cancellation record information to a pre-established temporary data storage point; when a regular activation data time is reached, the background issues a changed data file to the service foreground; and, the service foreground loads the changed data file and clears all of the data in the temporary data storage point.