The invention discloses an analog processor upgrading method and device. The upgrading method comprises the steps that the course of a new-version analog processor is created, and meanwhile an old-version analog processor is kept in a running mode; memory feature information of the old-version analog processor is acquired; the memory feature information is migrated into the new-version analog processor; after migrating is completed, the old-version analog processor and a network are disconnected, and the new-version analog processor is connected with the network. The analog processor upgrading method and device have the advantage that the service interruption time generated when the analog processor is upgraded is shortened.