Carbon dioxide Laser is a recently developed instrument which has became essential in laryngology, especially in its pediatric applications. Authors report 86 cases of children with a laryngeal pathology treated by CO2 Laser at the Childrens Hospital of La Timone in Marseille. Four groups emerge from this study. They are composed of laryngomalacia (n = 34), subglottic angiomas (n = 12), laryngeal papillomatosis (n = 12) and laryngeal stenosis (n = 14). Other patients (n = 14) made up a miscellaneous population (granulomas, laryngeal paralysis, benign tumors). Post-operative data are analyzed and compared with those of literature. The result is that this therapeutic method, used within the limits of precise indications and, if necessary, with divided sequences, can offer rapid curative care with few complications.