Female vaginal discharge mixed with a small amount of stale blood, along with leucorrhea, can be manifested as brown discharge. Normal leukorrhea is colorless and odorless and the amount is not much. The leukorrhea changes at different stages of the menstrual cycle, and the pelvic-filled leukorrhea also increases 2-3 days before menstruation, sometimes slightly bloody, and is related to luteal insufficiency. There are many causes of brown leucorrhea, brown leucorrhea in the middle of menstruation and hormonal changes in the body have a certain relationship, belong to the ovulatory bleeding, generally within a week of menstruation naturally clean can, without special treatment. If the leucorrhea is brown after menstruation and the discharge has an odor, it is mostly considered to be caused by cervical disease, which can be seen in cervical cancer, endometrial cancer, cervical polyp, cervical erosion, etc. These brown discharges are difficult to recover on their own and should be actively examined by ultrasound and cervical exfoliative cytology to exclude cancerous changes. In addition, if the brown discharge is incessant, it may be related to oral contraceptives, uterine lesions, gynecological inflammation, environmental factors and endocrine disorders. The abnormal leucorrhea needs to be examined in time to clarify the specific cause, otherwise it will continue to develop and easily cause pelvic inflammatory disease, endometritis affecting pregnancy, and in serious cases, cancerous and life-threatening. During the bleeding period, you must pay attention to washing the vulva to prevent infection, do not have intercourse for the time being, do not eat cold, spicy and stimulating food, pay attention to the work and rest routine, and do not exercise strenuously. Have an ultrasound colposcopy done in time.