We reviewed medical records of 179 patients with bronchiectasis admitted in our department in our department in Pusan Paik Hospital, Inje University from Dec. 1979 to Jun. 1989. Surgical resections were performed in 167 patients [bilateral disease 29, unilateral 138]. To evaluate the results of surgical treatment of bilateral bronchiectasis, it was compared with that of unilateral one. The results were as follows: 1.Bilateral disease was 20.1% of all patients with bronchiectasis. The average age of patients with bilateral disease treated surgically was 28.8 2. There was no significant difference in age, clinical symptoms and disease distribution between bilateral and unilateral bronchiectasis. 3. The numbers of diseased segments in bronchography were 6.86$pm$2.00 and 4.33$pm$2.01 in bilateral and unilateral diseases respectively. 4. Six patients underwent bilateral resections, and 25 patients had some of diseased segment [average 2.24$pm$1.51] after resections, 5. After resections, 48.3% of patients with bilateral disease were free of symptoms and it was less than that in the unilateral one [87%]. But the remaining 51.7% of bilateral disease presented much improved clinical symptoms without aggravation.