Through finite element model to simulate the overlay materials and structure,a reasonable overlay materials and structure were calculated and analyzed based on the analyses of fatigue tests of resistance of the asphalt overlay to reflective cracking at home and abroad in the lierature.A method for improving general rut instrument was put forward by using reciprocating loading mode of rutting wheel to simulate forming process of reflective cracking(flexural-tensile type and shear type) caused by load.A test ...