A UV standard detector calibration method was researched to improve the calibration accuracy. A High Accurate UV Radiometer (HAUVR) was established, and the standard response of the UV radiometer was deduced. In calibration, the HAUVR was used to transfer standard and the substitution method was adopted to eliminate some uncertainty factors. Finally, two kinds of calibration methods, namely, standard light source and standard detector calibration methods, were taken to calibrate the irradiance of an untested light and the irradiance response of an ozone vertical detector. Calibration results show that the uncertainty of calibration has been decreased to 1.6% by standard detector calibration method, which proves the efficiency and high accuracy of the UV standard detector calibration method. It realizes the engineering applications of the UV detector calibration method.