Abstract: A mesoscopic numerical analysis was made with FEM for the main influencing factors on the resistance to the reflective cracking in Cape seal pavement under load, and the parameters of materials used were given through fitting optimization. The results showed that in Cape seal pavement the resistance to reflective cracking is high if the asphalt content is low in asphalt macadam, while low void has adverse effect though it is not great. The reflective crack is not easy to form and propagate when the pavement in the vicinity of bottom crack can be separating to a certain extent from the old pavement. The resistance to reflective cracking is high for thick pavement but, in view of an overall consideration, the paving thickness should not exceed 5-6 mm. The propagation of reflective cracking can be dampened if temping well the substrate of pavement, and the gap-graded asphalt macadam can decentralize the stress to dampen the formation and propagation of reflective cracking.