Laser leveling device and leveling method

A laser leveling device includes at least one laser emitting device for emitting a laser marking, in particular a one-dimensional laser marking, in an emission direction onto a projection surface. The laser emitting device includes a first sensor device for ascertaining the actual alignment of the at least one laser emitting device with respect to the projection surface, a controller which is designed to calculate a target alignment of the at least one laser emitting device at least on the basis of the ascertained actual alignment of the at least one laser emitting device with respect to the projection surface, and a positioning device for aligning the at least one laser emitting device according to the target alignment. The disclosure additionally relates to a leveling method.