Objective To analyze the diagnostic and therapeutic value of hysteroscopy in endometrial polyp(EMP).Methods The clinical data of 112 patients with endometrial polyp by pathologic diagnosis were analyzed retrospectively.All of the patients were examined and treated with hysteroscopy.For all the cases,transvaginal ultrasound had been done before hysteroscopy.Results There were 49 cases of endometrial polyps who were accurately diagnosed by transvaginal ultrasound and 92 cases by hysteroscopy.The coincidence ratio of hysteroscopy and pathological examination in diagnosing EMP was 82.14%,while that of transvaginal ultrasound and pathological examination in diagnosing EMP was 43.75%,there was significant difference between them.Misdiagnosis rate of hysteroscopy was 17.86%.Misdiagnosis of hysteroscopy were more likely endometrial hyperplasia or submucous myoma.Conclusion Diagnosis of endometrial polyps by hysteroscopy are more accurate than transvaginal ultrasound.The accurate diagnosis and the corresponding treating of hysteroscopy in endometrial polyps at the same time is possible,so hysteroscopy is worthy of clinical application.