Endometrial polyps are growths attached to the inner wall of the uterus that extend into the uterine cavity, and caused by overgrowth of the cells in the endometrium. They vary in size and can be single or multiple in number. They are mainly composed of endometrial glands, fibrous interstitium and thick-walled blood vessels. About 70%－80% of endometrial polyps show intermenstrual bleeding, excessive menstruation, prolonged menstrual period or irregular bleeding, and very few polyps can develop malignant changes. The pathogenesis of endometrial polyps may be related to abnormal hormones and receptors, imbalance between cell proliferation and apoptosis, heredity and inflammation. Symptoms, gynecological examination and ultrasound examination can make a preliminary diagnosis, and the final diagnosis needs to be made based on pathological examination after hysteroscopic resection. There are no unified standards for their treatment, including conservative treatment and surgical treatment. This paper reviews the progress of diagnosis and treatment of endometrial polyps.