This study reviewed 299 patients who underwent canal wall down mastoidectomy between April 1997 toApril 2000 in the Department of Ear, Nose & Throat (ENT), Tribhuvan University Teaching Hospital,Maharajgunj, Kathmandu. Sixty four patients had complications of chronic suppurative otitis mediaatticoantral type and five patients did not come for follow up. Out of remaining 230 patients, modifiedradical mastoidectomy was the commonest type of mastoid surgery which was done in 202 (87.83%)patients. Two hundred twenty four (96.39%) patients had a dry cavity. Nine (3.91%) patients developedwound infection, the commonest postoperative complication seen. Although 6 (2.61%) patients developedfacial nerve paresis/paralysis, 5 (2.18%) patients had total recovery of the facial nerve function and onlyone patient had persistent facial nerve palsy. Intracranial complications were seen in 3 (1.30% ) patientsand recurrence of disease in 2 (0.87%) patients. One patient died of septicemia. Proper aseptic precautionduring and after surgery and adequate knowledge of surgical landmarks is necessary to reducecomplications of surgery.