[TURP] Patients and Methods: This study was carried out in the Department of Urology, Ghazi Khan Medical College, DG Khan during the period from January 2015 to June 2015. A total of 138 patients with benign prostatic hyperplasia were included in the study Results: The mean age of the patients was 61.33 +/- 7.03 years. Most common factor leading to erectile dysfunction was older age [>60 years] found in 75 [54.3%] cases followed by capsular perforation which was evident in 19 [13.8%] patients. Frequency of erectile dysfunction after TURP was 13% in patients with benign prostatic hyperplasia. Out of total 75 older patients, 8 [10.7%] had erectile dysfunction after surgery. Out of the total 19 patients with capsular perforation, 7 [36.8%] had erectile dysfunction after surgery