The invention provides an accelerating loading experimental system for a highway pavement. The system comprises a control device, a portal frame and a scanning device, wherein the portal frame is arranged on the highway pavement; the scanning device is arranged at the top of the vehicle; a position label is arranged on the inner side at the top of the portal frame; the scanning device is used for scanning the top of the portal frame and sending the scanned first image information to the control device; the control device is used for confirming offset degree of a first driving track of the vehicle passing by the portal frame at this time relative to a preset second driving track according to a position relationship between a first position label in the first image information and a second position label in the preset second image information, adjusting the driving track of the vehicle according to the offset degree and controlling the vehicle to drive in an accelerating and loading form on the highway pavement according to the preset condition and the preset track. By virtue of the system provided by the invention, the manual intervention can be completely avoided in the accelerating loading process of the vehicle and the automatic accelerating loading can be realized, so that the accuracy of the accelerating and loading of the vehicle can be increased.