Objective: To assess the impact of surgical treatment of benign hyperplasia of the prostate on patients’ quality of life (QoL). Material and Methods: The QoL of 181 patients was assessed by the health questionnaire SF-36. The measurement was carried out before and 6 months after surgery. Results: After surgery, SF-36 scales improved their scores, fundamentally General Health (57.4%) and Physical Functioning (57.1%). 70.3% improved their physical component summary (PCS) and 49.1% their mental component summary (MCS). The improved PCS and MCS were not associated with the improved I-PSS or urine flow. The improved PCS was 2.2 times higher in patients who had previously scored under 44 in the PCS, 2.2 in patients who had scored over 25 in the I-PSS, and 2.9 times higher in patients without chronic diseases. With regard to MCS improvement, this was 17.1 times higher in patients who scored under 50 previously on the MCS, 3.1 in patients who scored over 4 on the IQL, 5.7 in patients without postoperative incontinence, and 3.3 times higher in patients who lived in urban areas. Conclusions: Improvement in QoL after surgery is noted more in physical than in psychological aspects. Although a reduction in the intensity of prostatic symptoms and an increase in urine flow values were noted postoperatively, the improvement QoL was not associated with improved symptoms or urinary flow.