Disaster recovery system and disaster recovery method

The invention discloses a disaster recovery system and a disaster recovery method, and relates to the technical field of disaster recovery, the system comprises a production end data center, a disaster recovery end data center and a calculation area, the calculation area comprises a plurality of secondary acquisition and control modules, each city is provided with the secondary acquisition and control module, and the production end data center and the disaster recovery end data center are located in different cities; the production end data center and the disaster recovery end data center are mainly used for issuing data processing tasks and realizing rapid issuing of the data processing tasks after disaster recovery switching, and a plurality of secondary acquisition and control modules in the calculation area receive the data processing tasks issued by the production end data center or the disaster recovery end data center, execute processing and realize multi-activity deployment of data processing. When a