Background: Little light has been shed on the erectile functions following bipolar vaporization of the prostate. Methods: A prospective study included 100 cases with a history of endoscopic prostatic surgery. Cases were allocated to two groups; group I of fifty cases were subjected to the conventional monopolar TURP and Group II were subjected to bipolar vaporization of the prostate. All patient were assessed 3- and 6-months after the operation, severity of benign prostatic hypertrophy symptoms and erectile function were re-assessed using IPSS and IIEF-5, respectively. Results: Although all patients in both groups demonstrated significantly lower IIEF-5 scores 3-months postoperative (p