Photobiomodulation is the use of visible and infrared light through emitting diodes - LED without thermal cytotoxic reactions.It was carried out a literature review with this studyto understand photobiomodulation applied to Chronic Obstructive Pulmonary Disease COPD.It survey in January 2023, SciELO, Lilacs, Pubmed, Medline Google Scholar databases. With descriptors “Low-level therapy” AND “Chr...