Abstract: The oil sands bitumen is an inferior raw material with high density, high viscosity, and high content of metal and carbon residue（CCR）. The impact of reaction temperature and reaction time on hydrotreating performance of oil sands bitumen was investigated with an autoclave and ebullated bed hydrotreating catalyst to find the optimal hydrotreating conditions. The test results show that as the temperature and reaction time increases, contents of Fe, Na, Ni, V, and CCR decrease. High temperature promotes the removal of metal and reduction of carbon residue. The best reaction conditions are: a temperature of 430 ℃ and a reaction time of 80min. Under the best conditions, the removal rates of Fe, Na, Ni, V reach 99.97%，99.99%，98.11%，99.61%, respectively. And the reduction rate of carbon residue is 72.61%. It is concluded that the ebullated bed hydrotreating is an effective technology for deep processing oil sands bitumen.