Using finite element method(FEM) software ABAQUS,dynamic computational model of asphalt pavement structures in sections with embankment over slope subgrade was established.

Having investigated the stability status of slope embankment of Qinghai-Tibet railway in permafrost regions,something is found that,in the operating period,low-fill slope embankment is the structure which is prone to produce disease,and the longitudinal cracks which as the main disease forms,directly affects the stability of slope embankment.