The　bottom-up　crack　(BUC),　one　kind　of　reflective　crack　that　initiates　at　the　bottom　of　asphalt　layer　and　prop-agates　upwards,　has　become　one　of　the　major　distresses　of　asphalt　pavement.　The　Mode　I　dominated　bilinear　cohesive　zone　model　(CZM)　after　calibration　was　introduced　into　finite　element　(FE)　model　to　simulate　the　BUC　propagation　in　asphalt　pavement　under　displacement　load.　The　mechanism　of　crack　propagation　under　different　types　of　periodic　load　was　analyzed　based　on　two　indexes　from　Mode　I　dominated　bilinear　CZM.　The　FE　model　and　corresponding　periodic　load　were　modified　to　limit　the　occurrence　of　top-down　crack　propagation.　A　combined　method　based　on　the　developed　model　was　adopted　to　predict　the　BUC　propagation　velocity　at　varied　heights　and　the　remaining　life　of　pavement.　The　results　showed　that　the　acceleration　of　BUC　propagation　decreased　with　the　crack　tip　height.　Moreover,　the　predicted　remaining　life　of　pavement　based　on　the　proposed　method　was　reasonable　referring　to　the　engineering　design　specifications.