To evaluate the outcome, clinical efficacy and safety of endometrial radiofrequency cauterization for the treatment of hypermenorrhea. From January 2011 to March 2015, a total of 195 women who visited to Chosun University Hospital had their charts and telephones reviewed for demographics, procedure data, clinical history, and follow up. The mean age was 43.3±5.9 years old. A decrease in days per cycle (7.9±2.8vs 5.4±2.3 days, p<0.001), and in pads per day (10.1±2.7 vs 5.9±3.8 pads/day, p<0.001) and an increase in hemoglobin (g/dL, mean±SD) / hematocrit (%, mean± SD) (7.4±0.5 / 29.5± 2.7 vs 11.7±1.3 / 36.1±4.2, p<0.001) and an improvement in self-reported quality of life scores (limitation of life: 8.1±2.2 vs 2.9±1.7, p<0.0001, discomfort score: 2.1±1.5 vs 0.9±1.5, p<0.001) were observed after endometrial radiofrequency cauterization. Assessment of the level of satisfaction showed that 83.6% of patients were satisfied with the procedure. No major complications were found. The prognostic factors of endometrial radiofrequency cauterization were age, parity, uterine depth, and cauterization time. But age and cauterization time had no significant difference statistically. Endometrial radiofrequency cauterization is a safe and efficient method to treat of hypermenorrhea. It reduces the menstrual flow, improves the quality of life, and remarkably satisfies patients with a desire to preserve a uterus.