The utility model discloses an asphalt pavement of semi -rigid base reflective cracking expands analogue means, extension analogue means includes that environment case, reflective cracking simulate platform, reflective cracking test system and sampling control system, environment bottom of the case portion is equipped with the base, the reflective cracking test system includes that the horizontal direction opens type reflective cracking test module and vertical direction shearing type reflective cracking test module. The utility model discloses the device not only can be followed horizontal direction simulation and opened type reflective cracking, can also follow vertical direction simulation shearing type reflective cracking, the simulation that can truly press close to asphalt pavement of semi -rigid base's actual reflective cracking's emergence and extension, and the selection of splitting material and structure to the pavement structure design moderate resistance provides the reference frame.