Recently head trauma more increased according to industrial and traffic development, and otologic problems including hearing impairment noted after head trauma. The purpose of this study is analysis and follow-up about hearing impairment and other otologic symptoms after head trauma, and provide good diagnostic and therapeutic guidance. We studied 45 patients among the 380 patients of head trauma who had been admitted to Dept. of otolaryngology and neurosurgery, Ewha woman's University Hospital from Jan. 1982 to Dec. 1982. Forty five cases, 19 with temporal bone fracture, 16 with other part of skull fracture except temporal bone, and 10 with head trauma without skull fracture, were sampled, who had no history of ear trouble and noise exposure. All the patients underwent a through E.N.T. examination and pure tone audiogram. The results were as follows ; 1) Of the 380 head trauma patients, 71 patients(19%) were skull fracture. And 27 patients of 71 skull fracture patients were temporal bone fracture. So the percentage of temporal bone fracture to skull fracture was 38%. 2) Male to female ratio was 3.5 : 1. 3) Most common cause of head trauma was automobile accident. 4) On otologic symptom and signs ; Of the 380 head trauma patients, 45 patients had clinical otologic findings. Of these 45 cases, the most common symptom was hearing impairment which was 39 cases(87%), ear bleeding in 19 cases(42%), tinnitus in 18 cases(40%), vertigo and dizziness in 8 cases(18%), hemotympanum in 7 cases(15%), and facial palsy in 3 cases(6%). And these otologic finding frequently noted in temporal bone fracture. On the type of hearing loss of 39 cases, unilateral hearing loss was 19 cases(49%), bilateral hearing loss was 14 cases(36%) and 6 cases(15%) were within normal speech range. 5) Audiogram finding ; Audiologic study was performed for 78 ears and hearing loss above 25 dB was observed in 47 ears. Conductive type hearing loss was 19 ears(40%), mixed type hearing loss in 16 ears(14%), and sensorineural type hearing loss in 12 ears(26%). Most common degree of hearing loss was mild degree which was 20 ears(43%), and most common audiogram curve type was flat type in 12 ears(26%). 6) Follow-up audiogram finding ; Follow-up of 23 cases of hearing loss, 11 cases were improved, 11 cases no improved, and 1 case was malingering. And on the type of audiogram, the most improved type was descending type and least was flat type. 7) 2 cases of 18 tinnitus were spontaneously improved during 1 month, but remaining 16 cases were no improved. 8) 8 cases of vertigo and dizziness were all improved and 26 cases ear bleeding or hemotympanum also absorbed. In follow-up 2 cases of facial palsy, all were improved.