A novel bankcard transaction exchange system, which is also an exchange network and a settlement network of various bankcard transactions at the same time, comprising: a processing center, at least one backup center, and a plurality of member institutions connected to the processing center via a network, characterized in that: the processing center is configured with a switching subsystem and a batch processing subsystem, and it can achieve interoperability effectively. The system of the invention is a bankcard transaction processing platform which can realize "centralized exchange and unified settlement", wherein advanced switching technologies are employed, various network access interfaces may be compatible; transaction exchange and settlement of various currencies and various cards are supported; parameterized function configuration is supported; it may be adapted to the changes of the market, and easy for function expansion; it is convenient for users; it is secure and reliable; and the peak transaction capacity can meet the requirements of the development of future bankcard service.