Password resource protection device and method for password card

The password resource protection device comprises a password card board card, a PCI-E interface is arranged at the front end of the password card board card, and a PCI-E main control chip, a Beidou positioning chip, an FPGA chip, a noise source chip and a storage chip are installed on the password card board card; the PCI-E main control chip is respectively connected with the PCI-E interface, the Beidou positioning chip and the FPGA chip, and the FPGA chip is respectively connected with the noise source chip and the storage chip; the Beidou positioning chip is used for acquiring password card position information; the storage chip is used for storing password resources; the PCI-E main control chip is used for judging the position information of the password card, and if the position information of the password card is abnormal, password resources in the storage chip are erased through the FPGA chip. Based on the positioning function of the Beidou chip, the position information of the password card can be inqu