The strength, deformation, seepage properties and other indicators of hydraulic asphalt concrete are determined by the asphalt concrete mixed rate. There are many factors affecting the performance of asphalt concrete in practical engineering. In order to determine the asphalt concrete mixed rate, a large number of tests are needed. Based on orthogonal test method, the paper studied the effects of three factors as bitumen aggregate ratio, filler content and graded index to the performance of asphalt concrete. The results showed that the bitumen aggregate ratio was the most significant factor affecting the properties of asphalt concrete.