The invention relates to a method for producing high-viscosity index lubricating oil base oil, which comprises the following steps: (1) carrying out solvent dewaxing on raw oil; (2) carrying out contact reaction on the dewaxed oil obtained in the step (1) and a hydrotreating catalyst; (3) mixing the hydrotreated dewaxed oil obtained in the step (2) with oily wax obtained in the step (1), and carrying out contact reaction on the mixture and a first hydrofining catalyst; (4) carrying out contact reaction on the hydrofining product obtained in the step (3) and a hydroisomerizing dewaxing catalyst; (5) carrying out contact reaction on the hydroisomerizing product obtained in the step (4) and a second hydrofining catalyst; and (6) cutting the second hydrofining product obtained in the step (5) to obtain the lubricating oil base oil product, wherein the hydrotreating catalyst used in the step (2) comprises a catalyst I, a catalyst II and a catalyst III which are sequentially layered. The method provided by the invention can further improve the quality of the lubricating oil base oil.