Uterine polyps are common gynecological diseases, according to the different growth sites, divided into cervical polyps and endometrial polyps. Cervical polyps: limited hyperplasia of the glands and mesenchyme of the cervical canal of the uterus and protrudes toward the external opening of the cervix to form. Endometrial polyps: composed of endometrium, covered with a layer of cuboidal epithelium or low columnar epithelium. First, the formation of uterine polyps factors 1, endocrine disorders: estrogen promotes the development of the vagina, uterus, fallopian tubes and ovaries themselves, but the long-term stimulation of high levels of estrogen can make the endometrium overgrowth, the formation of polyps. 2, inflammatory stimulation: the main cause of chronic inflammation in the long-term stimulation, such as childbirth, abortion, puerperal infection, surgical operations or mechanical stimulation, sexual intercourse damage to the uterus, resulting in the cervical canal local mucosal hyperplasia and other lesions, and then gradually protruding to the cervical opening, and the gradual formation of polyps. 3, other reasons: such as hypertension, diabetes, obesity, endometrial hyperplasia, age and so on. Second, the clinical manifestations of uterine polyps 1, abnormal leukorrhea: patients can appear leukorrhea, blood and other phenomena. A small number of polyps are large and long, can be detached from the cervical opening, causing a small amount of vaginal bleeding, or bleeding after sexual intercourse. If the polyp is ulcerated, infected or necrotic, it will produce bloody or purulent leukorrhea. 2.Abnormal uterine bleeding: some women may have heavy menstrual periods, shortened cycle or prolonged menstrual period, dribbling, bleeding after couples’ life, as well as irregular vaginal bleeding after menopause. Infertility and miscarriage: if uterine polyps grow in the cervical canal, they may prevent sperm from entering the uterine cavity. If it grows in the uterine cavity, it will prevent the fertilized egg from settling or affect the development of the embryo, thus leading to infertility or miscarriage. Third, uterine polyps need to do what examination: 1, ultrasound: transvaginal ultrasound, can clarify the location of the uterine polyps, number, size. 2, gynecological examination: when the cervix is exposed with a vaginal speculum, uterine polyps of different sizes and shapes can be seen. 3, hysteroscopy: hysteroscopy can directly observe the polyp situation in the uterine cavity, but also under the direct vision of the suspected lesions for biopsy. 4. Pathological examination: Although cancer is rare, the cancer rate of uterine polyps is 0.2%~0.4%, so after resection, pathological examination is needed.