Abstract: The article analyzed the domestic and international CRC checking methods which are applied to Smart Card,and deep research on Smart Card standard and the CRC polynomial.On this basis,the two types of CRC calculation are mixed together,and a new hardware realization method is presented combining with Smart Card standard.According to this method a hardware design of CRC calculation module is completed.The design had been simulated on RTL level,verified by the FPGA,and successfully processed.The chip has passed flow pieces tested.The results showed that the module function and performance reached design target,the performance is good.