A system composed of USB chip,FLASH chip and CPLD which can configure when FPGA powers on is intro-duced for the demand that FPGA can automatically get configuration file when it powers on every time. The system can write the FPGA configuration file in Flash chip through USB chip and CPLD,and configure FPGA with the configuration file in the PS mode. Testing results show that the system can automatically configure FPGA when it powers on,and make up the insufficient of data loss when FPGA powers off.%针对FPGA可以在每次上电时自动获取配置文件的需求，提出了一种由USB芯片和FLASH芯片、CPLD组成的可对FPGA上电后自动加载的系统。该系统可以通过USB芯片和CPLD将PC中的FPGA配置文件写入FLASH芯片，并且在CPLD的控制下将配置文件以PS模式配置给FPGA。测试表明，该系统可以在上电时自动对FPGA进行加载，弥补了FPGA掉电后数据消失的不足。
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