An audiologic study was performed on 98 electric burn patients who had been hospitalized in our hospital from Jan., 1981 to May., 1983. All subjects were free from specific noise exposure, ear disease and they were admitted more than 8 weeks. Pure tone audiometry was carried out after, 1 month, patient's general condition was stable more or less. For evaluation of hearing difference, they were classified by burn area, voltage, and direction of input. Among 98 patients, the number of sensorineural hearing loss patients was 23 (unilateral 6, bilateral 17) and mixed hearing loss was 1 (bilateral). Results were as follows : 1) Relationship between burn area and hearing loss. (1) The less body surface was burned, the more normal hearing rate was observed. (2) Bilateral hearing loss was observed more than unilateral hearing loss, but there was no relationship between burn area and bilateral hearing loss. (3) Configuration of audiogram in 48 ears ; Descending, 21 ears : Abrupt drop, 18 ears ; Dip form, 3 ears. Within 15% (Burn area) : Abrupt drop was mostly observed. Over 15% (Burn area) : Descending & Dip form were mostly observed. (4) Average hearing loss of each frequency in different burn area & voltage : Speech range ; From 30 to 45 dB, 4 KHz ; From 40 to 67.5 dB, 8 KHz ; From 43.8 to 69.4 dB. The more burn area was increased, the more average hearing loss in each frequency seemed to be increased. 2) There was no relationship between voltage difference and hearing loss. 3) Relationship between site of input and hearing loss. Upper extremities ; 88 (13). Head, Neck, Face ; 3 (2). Shoulder & Axilla ; 4 (3). Chest wall, Back ; 3 (2). ( ) means the number of hearing loss patients. 4) Among those 6 unilateral hearing loss patients, ipsilateral input of burn (Direction) was 5, contralateral was 1. In the case of unilateral hearing loss, there was relationship between direction of input and side of impaired ear.