The brown color of leukorrhea is considered to be the result of a small amount of bleeding, which is not discharged in time and oxidized in the body to form a brown color. The main reasons are: 1, women at the beginning of menstruation, the amount of bleeding is relatively small, oxidation in the vagina and normal leucorrhea mixed to form, normal phenomenon do not need to deal with. 2, early pregnancy, when the embryo buried in the endometrium, resulting in a small amount of endometrial bleeding, in the vagina and normal leucorrhea mixed with diluted blood, causing brown leucorrhea, is normal, observe a period of time, about 3 days can be relieved. 3, cervical columnar When epithelial ectopia is accompanied by cervical inflammation, there will be slight bleeding from the cervix, which will oxidize in the vagina and form brown leucorrhea when discharged out of the body. 4. When there is vaginal inflammation, the inflammation stimulates the vaginal mucosa causing slight bleeding and the blood receives germs and oxygen, resulting in brown leucorrhea, which is treated with anti-inflammatory drugs in the vagina.