<正> An mvestigation and analysis of 229 deal-mute children revealed that 54.2％ of ac-quired deafness were mused by ototoxic aminoglycoside drugs.There is an upward trend of the oc-cunence of the disease in the recent years and more attention should be paid to it.The result ofpure tone audiometry showed that more than 90.4％ of deaf-mute children had some residualhearing.Twenty-six deal-mute children whose average hearing thresholds of speech frequency werebetter them 90dB（HL）had serviceable speech for daily use 3 after 3 to 18 months’ speech Warn-ing

and 4 of them were transferred to ordinary primary schools.The authors are of the opinionthat the deaf-mute children should use heating-aids as early as possible so as to promote theirspeech.