The invention discloses a cross-platform multilevel integrated design system for an FPGA (field programmable gate array). The cross-platform multilevel integrated design system comprises a user graphical interface module, an FPGA chip generating module, an FPGA design module, an FPGA system application module and an FPGA verification module, wherein the user graphic interface module is used for packaging the FPGA chip generating module, the FPGA design module, the FPGA system application module and the FPGA verification module. Switching among the FPGA chip generating module, the FPGA design module, the FPGA system application module and the FPGA verification module is realized by Tap page switching, so that the FPGA chip generating module, the FPGA design module, the FPGA system application module and the FPGA verification module can be called in a friendly and uniform user graphic interface, and cross-platform operating of Windows, Linux, Mac OS systems can be realized.