<p>A banknote or bill management system and a server. The banknote or bill management system comprises a first client, a second client, and a financial authentication server responsible for maintaining a financial management database. The second client is a portable terminal. The first client is used for validating the authenticity of a banknote or a bill and sending a validation result to the financial authentication server (S302), so as to update the financial management database (S303). The second client is used for querying the financial management database of the financial authentication server according to the serial number of the banknote or bill to be validated, so as to obtain authenticity information of the banknote or bill to be validated (S304). The management system provides a user with a solution capable of performing authentication anytime anywhere.</p>
