Menstrual intercourse generally does not cause endometrial polyps, but it is easy to lead to heavy menstruation and gynecological inflammation. Endometrial polyp is due to hormonal changes in the body or long-term inflammatory stimulation caused by the uterus local mesenchymal overgrowth of benign epithelium of benign diseases, so the occurrence of endometrial polyps and coitus is not directly related. Menstrual intercourse will stimulate the uterus to contract, thus promoting the endometrium to peel off the symptoms of heavy menstruation, prolonged menstruation, etc. At the same time, due to the menstrual period of women’s resistance is relatively weak, the anaerobic bacteria and other pathogens in the vagina will be a large number of reproduction or upward and cause vaginitis, pelvic inflammation and other gynecological inflammatory diseases, so do not recommend that women have intercourse during the period of menstruation. For women who have been examined and found endometrial polyps, it is recommended that they go to the gynecology department of a regular hospital and be actively treated under the guidance of a doctor to avoid further development and lead to malignant lesions.