To improve the performance of instrument and the inversion of remote sensing data,we analyze the influence of instrument optical system films on polarization.The xenon lamp,collimation system,Brewster polarizer and ultraviolet spectrometer are used to build a set of polarization response testing system.P polarized light and S polarized light polarization response characteristics of the instrument are measured in the range from 200 nm to 320 nm ultraviolet wavelength band.The test result indicates that the i...