Abstract: The SRAM-based FPGA is susceptible to single event upsets (SEU).Due to the effects and the errors induced by SEU, the function of the SRAM-based FPGA might be interrupted. The SEU-tolerant methods are designed for space applications, to improve the reliability of the SRAM-based FPGA on spacecraft. This paper reviews several SEU-tolerant methods, such as the triple modular redundancy(TMR) method, the scrubbing method and the FPGA dynamic partial reconfiguration technology.