If the leukorrhea is brown, it is often related to the following factors: 1. The most common factor is the irregular shedding of the endometrium due to endocrine disorders, causing the leukorrhea to appear brown, such as luteal insufficiency and estrogen deficiency, which may lead to irregular shedding of the endometrium, causing the leukorrhea to appear brown. 2. Due to endometrial lesions themselves, such as endometrial polyps, uterine The endometrial inflammation, endometrial cancer and endometrial atypical hyperplasia can lead to brownish leucorrhea. 3, due to organic lesions, such as submucosal fibroids or pelvic tumors, can affect the brownish leucorrhea, and then there are cervical lesions, such as cervical cancer, chronic inflammation of the cervix and vaginal inflammation, which can lead to brownish leucorrhea. Therefore, once the leucorrhea is found to be brown, a detailed gynecological examination must be done and cervical cancer screening and ultrasound examination are recommended.