Data synchronization method and device

The invention discloses a data synchronization method and device, and the method comprises the steps: confirming the release if the data passes verification, and obtaining the release data; pulling the released data to the local to obtain local data, carrying out persistence on the local data to obtain persistent data, storing the persistent data into a first data file in a storage medium of the mobile terminal, and updating a data synchronization state in a protocol file; analyzing the first specific data file to obtain first structured data, and sending the first structured data to the mobile terminal APP service application; acquiring second data, persisting the second data into a second data file, and updating a data synchronization state in the protocol file; reading a protocol file in the second data file, identifying that data needs to be synchronized to the PC service system, analyzing the second data file to obtain second structured data, and sending the second structured data to the desktop end prog