115 cases of ENT diseases (chronic rhinitis, chronic pharyngitis, chronic laryngitis and nervous deafness etc) were treated by a He-Cd laser from October 1979 to May 1981. Obvious effects were obtained in 29 cases (25.3%), 55 cases (47.8%) were effective, 31 cases (26.1%) were ineffective, and the effective rate was 73.9%.