Transcervical resection of endometrium was performed in 65 cases by endoscopic continuous flow resectoscope under epidural anesthesia and B ultrasonic monitoring to treat dysfunctional uterine bleeding which had been treated by conservative measures no avail. Resected tissue included functional and basal layers of endometrium as well as underlying 1-2 mm myometrium. Bleeding immediately after the operation was rare serious followed by watery discharge usually persisted for about 4 weeks. Follow-up examination for 5-20 months showed that 19 cases had amenorrhea, 12 cases spotting, 31 cases had obvious reduced menstrual flow and 3 cases no improvement. Hysteroscopic examination and hysterography in all 24 cases showed no adhesions. This operation involves no abdominal incision and is therefore less traumatic. It is associated with very little bleeding and minimal morbidity. No long term effects on ovarian function was noticed. Endoscopic surgery will probably replace most conventional hysterectomies done for dysfunctional uterine bleeding.