To address the shortcoming that traditional pavement performance method is subjective and is not suitable to the high-grade road, and intelligent algorithm is fussy to determine the parameters, the pavement condition index(PCI)，pavement ride quality index(RQI)，structure strength index(SSI)，pavement skid resistance index (SRI) and rut depth (RD) were chosen as pavement performance indicators to determine the weight coefficient of each index in the Delphi method. A comprehensive model of pavement performance assessment was established in Delphi-Ideal Point method. At last, some highway pavement performance data were analyzed and computed, and the results were consistent with the actual data, thus proving that the Delphi-Ideal Point method is reliable. This method greatly reduces the weight of subjectivity, and it is feasible and simple, and at the same time, its calculation is easy.