The authors show the possibilities of using the laser CO2 in treatment of both laryngostenosis and tracheostenosis in 54 patients. In the article various forms of treatment of laryngostenosis and tracheostenosis as well as the results of the therapy have been presented. On the basis of the cases treated so far, the prospects of using the laser CO2 in this form of treatment have been found limited. The best results have been attained in treating the narrowings on a small surface. In case of complex laryngostenosis and tracheostenosis, the most effective treatment has been obtained by using the combination of the laser microsurgery performed on the larynx area along with the surgical resection of the narrowed segment of the trachea and the fusion "end to end". In some cases good results have been achieved by using the laser CO2 to remove postoperative scars of the larynx after partial laryngectomies.