The invention discloses a method for producing road asphalt from deasphalting oil. The method comprises the following steps: blending residual oil and vacuum fourth-line distillate oil obtained afterdistillation of petroleum crude oil as a raw material, wherein the residual oil is a non-paraffin-based vacuum residual oil; subjecting the raw material to solvent deasphalting treatment to obtain deoiled asphalt and deasphalted oil, and taking heavy deasphalted oil with residual carbon of no less than 3.5% in the deasphalted oil; selecting the heavy deasphalted oil meeting performance requirements on road asphalt No. 110, No. 130 and No. 160 described in Technical Specifications for Construction of Highway Asphalt Pavement issued by Ministry of Communications as a product; and blending the heavy deasphalted oil that does not meet the requirements with heavy vacuum residual oil so as to obtain the product. The asphalt prepared in the invention satisfies requirements on the asphalt No. 110,No. 130 and No. 160 described in Technical Specifications for Construction of Highway Asphalt Pavement (JTG F40-2004) issued by Ministry of Communications, so the utilization value of the deasphaltedoil is improved and the range of raw materials for the production of the asphalt is broadened.