The common causes and treatment methods are as follows: a. Physiological factors: women have a small amount of vaginal bleeding during ovulation due to hormonal changes in the body, which is manifested as brown discharge, or a small amount of blood in the leucorrhea, usually lasting 3-5 days, without special treatment, can be self-healing, this phenomenon is ovulatory bleeding, is a normal phenomenon. It is a normal physiological phenomenon. Pathological factors: 1. Vaginitis: Trichomonas vaginalis, mycotic vaginitis and atrophic vaginitis can cause superficial bleeding due to inflammation stimulating the vaginal mucosa, resulting in brownish leucorrhea, accompanied by vaginal itching, increased secretions and odor. For trichomoniasis, oral metronidazole or tinidazole, vaginal metronidazole effervescent tablets, or red nucleus feminine cleansing lotion can be used to wash the vulva. Mycosis fungoides can be treated with oral Bega tablets, vaginal terbinafine hydrochloride effervescent tablets, and sodium bicarbonate solution for vaginal cleansing. Atrophic vaginitis can be treated with topical estriol ointment and oral tibolone for estrogen supplementation. 2. Cervicitis: contact bleeding due to congestion and edema of the mucous membrane of the cervix, resulting in leukorrhea with brownish color, along with vulvar itching and burning sensation. Cervicitis can usually be treated with physical therapy such as microwave, freezing, laser, etc., with better results; 3, endometrial polyps: due to polyps larger or growing into the cervical canal secondary infection, necrosis, resulting in the discharge of foul-smelling bloody secretions, and then the phenomenon of leucorrhea mixed with brown discharge. Usually hysteroscopic surgery to remove infected, necrotic polyps; 4. Pre-eclampsia: If the patient is a woman of childbearing age and has a history of menopause, the occurrence of leucorrhea with brown discharge should be alerted to the occurrence of pre-eclampsia. It should be bed rest, timely examination in hospital and treatment of fetus preservation; 5. Cervical cancer: caused by human papilloma virus infection, which may manifest as abnormal vaginal bleeding and fluid discharge, and leucorrhea with brown discharge. Usually, surgery is used to remove the tumor, and if necessary, radiotherapy and chemotherapy can be applied to assist in the treatment; 6, other: taking hormonal drugs, placing intrauterine devices, etc., can also lead to leucorrhea with brown discharge, which requires timely examination at the hospital to clarify the cause and provide symptomatic treatment.