The brown discharge that appears in the vagina is considered to be a mixture of vaginal secretions and blood. This phenomenon may be a normal physiological phenomenon, but it may also be caused by pathological factors such as pre-eclampsia, ectopic pregnancy, gynecological diseases, etc. It is recommended to go to the hospital as soon as possible to check the cause and then carry out symptomatic treatment: 1. Ovulatory bleeding: when ovulation is affected by hormonal fluctuations in the body, there may be an increase in secretions with a small amount of bleeding, which can also be manifested as vaginal brown discharge. Usually recover within a few days after ovulation, which is a normal physiological phenomenon. It can be diagnosed by serum HCG and abdominal ultrasound. After diagnosis, you can seek medical advice for medication or surgery; 3. Diseases such as vaginitis, endometriosis and cervicitis can cause vaginal bleeding, which can lead to brown discharge. It is recommended that women should go to the hospital for examination and treatment when brown vaginal discharge occurs to avoid missing the time for treatment. 4. Hormone secretion abnormalities: abnormalities in some endocrine organs in the body, such as pituitary tumor, hyperthyroidism and premature ovarian failure, can cause hormone secretion abnormalities, resulting in a small amount of endometrial bleeding, which is manifested as brown vaginal discharge. Under the advice of a doctor, medication can be used to regulate the hormone levels in the body and bring relief to the symptoms.