With a new and increasing technological demands come new solutions. This is how laser treatment found its way into material processing. As a main field in material processing, laser surface treatment is the main focus of this paper. As it involves laser, in the first, theoretical part, laser, their principle of working, types and their characteristics alongside with laser light and its physics are described. In the second part, basic categorization and description of laser surface treatment is given. The third part involves one of the processes described more thoroughly; laser cladding. It gives practical problems and examples regarding repairing technology in aerospace industry and sets up ground for a possible future experiment. At...