Abstract: Objective To study the causes, clinical characteristics, treatment efficacy, and main affecting factors in the prognosis of sudden deafness in juveniles. Methods 65 patients with sudden deafness were chosen and divided into different groups according to sex, nationailty ill ear, season, audiogram, degree of hearing loss, beginning time of therapy, accompanying vertigo or not, tinnitus, smoking and drinking history, and so on. The rank sum test and logistic regression analysis were then used for analyzing the data. Results Of all the 65 patients, the therapeutic effective rate was 58.5%. Single factor analysis showed that the beginning time of therapy, degree of hearing loss, accompanying vertigo were correlated with the prognosis (P<0.05). The logistics regression analysis showed that the beginning time of therapy and accompanying vertigo were correlated with patients’ prognosis (P<0.05). Conclusion The prognosis of sudden deafness in juveniles is related with the beginning time of therapy, accompanying vertigo and degree of hearing loss,which is similar to those of adults but also with some special characteristics.