The ITO/ Kapton/ Al Films and the S781 white coatings were two typical thermal control coatings used
on spacecrafts. The effects of electron irradiations of different energy on the solar absorptance(琢s) of them were studied. The X-ray photoelectron spectra(XPS) and the scanning electronic microscope( SEM) were used to analyze the element contents and the morphologies of the samples. The results show that for the same irradiation flux, the s of thermal control coatings are degraded to different degree after different energy electron irradiation. The changes of the reflection spectrums, the morphologies and the atomic contents of the samples are similar due to the same mechanism after electron irradiation of different energy.