描述了一种新的紫外和真空紫外光谱辐照度的定标方法．此方法可以减少光电接收器不稳定性引入的信号误差，使校准工作具有重复性好、精度高的优点，特别适用于光谱辐射强度较弱之光源的定标．用氩气氛替代真空条件，可使真空紫外范围内的定标工作快捷方便并节约成本． A new calibration method of UV and UV irradiance irradiance is described. The method can reduce the signal error introduced by the instability of the photoelectric receiver, and has the advantages of good repeatability and high precision in the calibration work, and is particularly suitable for the calibration of a light source with a weak spectral radiation intensity. With argon atmosphere instead of vacuum conditions, the vacuum UV range calibration work quickly and easily and save costs.