The invention discloses a laser radar point cloud target segmentation method and device, a target matching method and device and a vehicle. The target segmentation method comprises the steps of classifying point clouds obtained by scanning a target through a multi-line laser radar, and obtaining subclasses of the same target point cloud; projecting the point cloud of the subclass to a two-dimensional plane; obtaining an outer envelope box of each subclass; and combining the subclasses intersected with the outer envelope boxes into one class. According to the method, the outer envelope box merges the subclasses after point cloud segmentation, and a threshold value is not needed when the subclasses are merged, so that the defect that the threshold value is difficult to determine in the priorart is avoided. By changing the point cloud classification method, the operation amount is reduced, the target is incorporated into one database, the target of the new frame is compared and identified with the target in the database, the situation that the target is lost in some frames is effectively coped with, and accidents are avoided.