Base station board card upgrading method and device

The embodiment of the invention provides a base station board card upgrading method and device. The method is applied to a base station, the base station comprises a device driving system, an operation maintenance system and at least one board card, and the method comprises the steps that a host process of the operation maintenance system obtains a hotfix software package from a management station; the host process obtains a target version file corresponding to a to-be-upgraded board card in the at least one board card from the hotfix software package, and stores the target version file to a memory space of the to-be-upgraded board card; the host process decompresses the target version file by calling a device driving system to obtain a decompressed target version file; the slave process of the operation maintenance system loads the decompressed target version file; and the master process performs deactivation processing and activation processing on the slave process so as to complete upgrading operation on t