The present invention provides a heavy oil hydrotreating method, the method comprises contacting of heavy oil with a catalyst composition of a heavy oil hydrotreating catalyst I and a heavy oil hydrotreating catalyst II for heavy oil hydrotreating under heavy oil hydrotreating conditions, wherein first the heavy oil is contacted with the heavy oil hydrotreating catalyst I, and then contacted with the heavy oil hydrotreating catalyst II, by calculation of volume on the basis of the total volume of the catalyst composition as a reference, the content of the heavy oil hydrotreating catalyst I in the catalyst composition is 20-60v%, and the content of the heavy oil hydrotreating catalyst II in the catalyst composition is 40-80v%. Compared with conventional heavy oil hydrotreating methods, the heavy oil hydrotreating method has better hydrodesulfurization, demetalization and carbon residue removal effects when used in heavy oil hydrotreating.