Coupon recovery device and method

The invention provides a coupon recovery device and method, which can be used in the financial field, and the device comprises a bank APP front end which is used for: encrypting received user information, querying preferential activity information based on the encrypted user information, and displaying the queried preferential activity information; after activity participation information selected by the user based on the preferential activity information is received, querying coupon information corresponding to the activity participation information from a prize pool, and displaying the coupon information; after the discount coupon expires, updating the state of the discount coupon to be expired; and when the coupon in the display state is expired, adding a use limiting mark; the device also includes the management end that is used for: configuring preferential activity information; obtaining discount coupon information from the prize pool, and configuring discount coupon information corresponding to the pre