After UKEY is lost, I can reapply at the counter of China Merchants Bank with a valid account opening certificate and one-card card, or I can reapply at the counter after passing the professional version of the voided certificate (click "System Settings"-"Void Key"). Tips: There is a charge for reissue of UKEY. At present, our personal banking professional edition has excellent keys, and the current preferential price is 20 yuan/piece.