In view of the problem that GNSS intermediate frequency (IF) signal has a large amount of data and the traditional data acquisition card is expensive,a new GNSS IF data acquisition system based on USB2.0 serial bus and FPGA was designed under Linux operating system,and corresponding software and hardware design were accomplished.State machine was used for controlling the read-write status of each endpoint cache in CY7C68013A chip,to accomplish the high-speed data transmission.IF data was cached through FPGA to effectively improve the system data transmission bandwidth.A complete GNSS software receiver was realized under Linux,realizing the receiver user interface software based on QT and the data graphic display window based on Qwt plug-in.The test results show that the transmission rate of this data acquisition system can be up to more than 200 Mbit/s,which effectively solves the problem of mass data transmission while reducing the cost.The software receiver satisfies the requirement for positioning accuracy,with good flexibility and adaptability,and its easy to expand and upgrade the algorithm.