The appearance of brown discharge in women is mainly due to bleeding, the specific cause of what is caused, to be combined with the patient’s clinical symptoms and the relevant examination to determine. The following are the main possibilities: 1. Ovulatory bleeding, brown discharge during non-menstrual period is most common in ovulatory bleeding, which occurs in the middle of 2 periods with little bleeding and 3-5 days to clean up without discomfort. 2. Bleeding caused by cervical lesions, including cervical inflammation, polyps, cervical intraepithelial neoplasia or cervical cancer, which occurs after sex or gynecological examination. 3. bleeding due to organic lesions of the uterus, such as endometrial polyps, adenomyoma, adenomyosis, submucosal fibroids, and bleeding most often associated with a feeling of cramping in the abdomen and irregular menstruation. 4. if the bleeding occurs at the onset of menstruation but is not the normal amount of menstruation, consider that it may be ectopic pregnancy or pre-eclampsia. 5. if the bleeding is accompanied by abdominal pain and increased discharge, the patient is Consider bleeding due to inflammation.