The aluminum-based diffuser can be used on the on-orbit radiation calibration of the satellite carried spectrum instrument in vacuum and far ultraviolent waveband.The detector can be calibrated by solar irradiance out of atmosphere and the BRDF characteristic of the diffuser.The diffuser plays the role of the standard transfer.To research the BRDF characteristic in the vacuum and far ultraviolent waveband,through the monitor and compensation to the light resource,the relative method is been carried,which can decrease the non-linearity of the detector response and the instability of the light source.Using the BRDF measurement instrument,the BRDF value is been measured at the 110 nm,150 nm and 200 nm wavelength under 0° normal incidence and 30° oblique incidence.The results show that the value of BRDF is related to wavelength,incident angle and zenith angle.When it is at the 0° normal incidence,BRDF peak value of the 110 nm and 150 nm wavelength is reduced to 26.10 % and 11.94 % respectively than 200 nm.When it is at the 30° normal incidence,BRDF peak value of the 110 nm and 150 nm wavelength is decreased to 31.04 % and 16.04 % respectively than 200 nm.In the normal incidence and oblique incidence,BRDF value decreases with the increase of azimuth angle.But in the normal incidence,the scatter of the diffuser is relatively uniform.And in the oblique incidence,the mirror reflection is obvious.With the increase of the incidence angle,BRDF value decreases more rapidly with the increase of zenith Angle.The experimental results can provide reference for the BRDF characteristics of aluminum-based diffuser in far ultraviolet waveband and on-orbit calibration.