The comparison between sonohysterography assesment and transvaginal sonography was made in 33 wemen with abnormal vaginal bleeding and spotting. Surgical intervention(endometrial biopsy, hysteroscopy, total abdominal hysterectomy) was performed after sonohysterography according to each patient's condition between July 1994 and February 1995. The main results were as follows: 1. The distribution of pathology were: normal(6), endometrial polyp(19), submousal myoma(3), endometrial hyperplasia(2), mixed pattern(2), endometrial synechia(1). 2. In the comparison of transvaginal sonography with sonohysterography, hypertrophy(9/10), hyperechoic(10/10), nodular(4/4), mixed(2/2) patterns were correlated with sonohysterography findings. 3. The diagnostic sensitivity of transvaginal sonography and sonohysterography in endometrial pathology was 66% and 85% (p<0.05). 4. Complications of sonohysterography were lower abdominal pain, uterine bleeding and mild pelvic inflammatory disease. In conclusion, sonohysterography is more efficacious diagnostic tool than transvaginal sonography in the evaluation of abnormal uterine bleeding.