The present invention discloses a method and device of pavement identification on the basis of a laser-point cloud. The method provided by the invention comprises: identifying candidate pavement point clouds according to the laser-point cloud collected by a laser sensor; constructing a rectangular coordinate system grid, clustering a candidate pavement point cloud projected to the rectangular coordinate system grid, and obtaining a credible pavement point cloud; and constructing a pavement model according to the credible pavement point cloud and the driving direction of a mobile carrier provided with the laser sensor. Through the technical scheme provided by the embodiment of the invention, a candidate pavement point cloud is identified according to the laser-point cloud collected by a laser sensor, a credible pavement point cloud is obtained by clustering the candidate pavement point cloud projected to the rectangular coordinate system grid, and finally a pavement model is constructed according to the credible pavement point cloud and the driving direction of a mobile carrier provided with the laser sensor, therefore the noise in a pavement laser-point cloud is effectively filtered and the accuracy of the construction of the pavement model is improved.