To meet the application requirements of high stability, miniaturization and low power consumption of ultraviolet (UV) sensors in space calibration and the technical indexes such as the stability less than 1‰ and stable time less than 3 minutes when the UV Light Emitting Diode (LED) calibration is carried out with a typical current of 200 mA, a method for using a digital control circuit based on FPGA to drive the UV LED and using incremental Proportional-Integral-Derivative (PID) for close-loop control is proposed. The current stability of the UV LED is tested and the error of current changing with time is obtained. The test results show that this system can make the UV LED be stable in 3 minutes with the stability of 0.2‰ which can meet the requirement of space UV calibration.