In the paper are presentated longterm results of measuring concrete surface layer using laser confocal microscopy. We focused on observation of changes proceeding on concrete surface under action of aerial CO2 and deicing salts during freeze-thaw cycling. Some changes arel observable by human eyes, but it is very difficult to find some quantitative measuring methodology. Some opportunity of objective and quantitative evaluation of concrete surface is offered by a confocal laser scanning microscope LEXT OLM 3000. System enables 3D observation and high-precision 3D measurement in real time. Application of new type of unique confocal laser scanning microscope system, that presents a new generation optical system for identification and description of esthetical imperfections of fair-face concrete and degradation determination are presented in contribution.