Based　on　a　dynamic　3-D　finite　element　method,　the　deformation,　stress　and　damage　characteristics　of　a　pavement　slab　with　different　impacting　times　were　studied　under　the　condition　of　Impact　roller　running　along　the　longitudinal　middle　and　side　route　of　the　slab.　It　is　found　that　the　slab　undergoes　a　larger　vertical　displacement　for　the　case　of　the　side　route　than　for　the　middle　route.　The　pavement　had　the　integral　sinking　tendency,　and　the　maximum　vertical　displacement　of　the　slab　ascends　with　a　decelerating　trend　and　tend　to　stabilization　as　the　impact　times　increased;　underneath　the　loading　point　the　slab　bottom　was　in　tension　with　compression　zones　around　the　point,　and　the　longitudinal　principal　tensile　stress　was　larger　than　the　lateral　one;　there　was　no　significant　plastic　section　on　the　slab　surface　but　it　occurred　on　the　slab　bottom.　The　maximum　plastic　strain　along　the　side　route　was　larger　than　the　middle　route　with　larger　plastic　section.　During　impact　rolling,　the　most　originated　plastic　section　was　found　on　the　slab　bottom,　and　the　plastic　section　was　developed　from　the　slab　bottom　to　the　top　as　the　number　of　impact　times　increased.