Surface charging level of epoxy resin materials applied to spacecraft surface at different temperatures is investigated. By setting different beam density, effects of temperature and electron beam density change on surface charging level of epoxy resin are investigated. Results show that when the beam density is 0.5 nA/cm2 and 1 nA/cm2, the surface charging balance potential of epoxy resin shows the trend of decreasing first, increasing and then decreasing in the temperature range from 243 K to 363 K. When the beam density is 2 nA/cm2, the variation range of surface charging balance potential of epoxy resin is not big. It can be found that when the beam density is small, effects of temperature on surface charging balance potential are stronger. The greater the beam density is, the weaker the effect of temperature on surface charging balance potential will be, so the surface charging balance potential of epoxy resin is more stable.