Banknote processing system and method

A banknote processing system, comprising a terminal machine, an identification unit, a physical banknote box, a banknote box information memory and a main control unit, wherein:

• the terminal machine is configured to deal with cash deposit transaction and/or cash withdrawal transaction;
• the identification unit is configured to, during cash deposit or cash withdrawal via the terminal machine, detect a banknote which is input into or output from the physical banknote box to get inherent information on the banknote, the inherent information is identification information for distinguishing various banknotes;
• the physical banknote box is configured to store banknotes;
• the banknote box information memory is configured to store a virtual electronic banknote box, the virtual electronic banknote box is an aggregate of the inherent information on banknotes, the inherent information in the virtual electronic banknote box and the banknotes in the physical banknote box have one-to-one mapping relationship with each other, and the storage order of the inherent information and the stacking order of the banknotes in the physical banknote box are the same;
• and
• the main control unit is configured to update the virtual electronic banknote box according to the inherent information on the banknote obtained by the identification unit;
• and to determine information on the banknotes in the physical banknote box according to the information in the virtual electronic banknote box.