Bank card data monitoring and alarming system

The invention discloses a bank card data monitoring and alarming system, which comprises a point of sale (POS) machine, an automatic teller machine (ATM), an online bank terminal, a communication front-end processor and a bank card data processing device, wherein the POS machine is used for reading data of a bank card; the ATM is used for reading the data of the bank card; the online bank terminal is used for inputting the data of the bank card; the communication front-end processor is used for performing data exchange processing on the received data of the bank card; the bank card data processing device comprises a singlechip and a POS machine data cache, an ATM data cache, an online bank terminal data cache, an alarming instruction generator and a short message communication module which are connected with the singlechi; and the short message communication module is used for sending bank card alarming information to external wireless communication terminal equipment or a remote server according to an alarming instruction. The problem about monitoring for the data of the bank card by the POS machine, the ATM or the online bank terminal and the problem of false alarming for the data of the bank card are solved.