A clinico-statistical analysis was performed on 400 cases with chief complaint of hoarseness at the department of otolaryngology, Hanil hospital during the past 7 years from Jan. 1970 to Dec. 1976. The results were as follows ; 1) Among 14,731 persons of total out-patients who visited to the department of otolaryngology, the patients with chief complaints of hoarseness were 400 cases (2.7%). 2) Among above 400 cases, male were 211 cases and female, 189. The incidence was slightly higher in male than female with ratio 1.1 to 1 in sex distribution. 3) The underlying diseases causing hoarseness in order of frequency were acute laryngitis (158 cases, 39.5%), chronic laryngitis (103 cases, 27.3%), vocal nodule (37 cases, 9.3%), vocal cord paralysis (34 cases, 8.5%), laryngeal polyp (32 cases, 8%), laryngeal carcinoma (13 cases, 3.5%), and laryngeal tuberculosis (9 cases, 2.3%). Particulary, laryngeal carcinoma, laryngeal polyps and laryngeal papilloma were extremely high in male but the others were equally distributed in sex group distribution. 4) The highest incidence occurred in 3rd decade (113 cases, 28.3%) and the next 4th and 2nd decade in the age group distribution. Acute and chronic laryngitis were widely distributed in age group distribution but the highest incidence was noted between 3rd and 4th decade(145 cases, 55.5%). The highest incidence was 3rd decade in laryngeal polyp, 3rd and 4th dacade in vocal nodule, 4th and 5th decade in laryngeal tuberculosis and vocal cord paralysis and 5th decade in laryngeal carcinoma. 5) The underlying diseases causing hoarseness, occurred evenly in monthly distribution, but higher incidence was observed between Apr. and Jun. (35.5%). 6) The highest incidence was within 10 days (26%) from onset to concultation and 317 cases (80%) were visited to the clinic within 1 year.