The serial PCIe interface is the third-generation I/O interconnection standard.Characterized by high speed and high bandwidth,it overcomes the inherent shortcomings of traditional PCI bus in system bandwidth and transmission speed,and has a good application prospect.Use of FPGA to design PCIe bus-based data transmission can reduce the design cost of hardware and improve its integration level,as well as improving the design flexibility and adaptability by making use of the programmable feature of FPGA.Based on a brief overview of PCIe bus,PCIe hard core structure inserted into FPGA and PCIe transmission message,a solution to realize DMA transmission based on PCIe hard core inserted into FPGA is proposed,with a detailed description of the design proposal.An evaluation and analysis of the design is made,and the test results of transmission bandwidth are given.