Brown discharge and a small amount of blood in the 11th week of pregnancy is mostly indicative of vaginal bleeding, which may be caused by preeclampsia, vaginitis and other diseases, and requires timely consultation to clarify the cause and appropriate treatment. 1. Pre-eclampsia: Patients with pre-eclampsia need to take proper rest, prohibit sexual intercourse, and supplement sufficient nutrients. For patients with luteal insufficiency, progesterone can be injected intramuscularly or taken orally, while those with hypothyroidism can take thyroid tablets as prescribed by the doctor. If the symptoms of vaginal bleeding worsen, abortion can not be avoided, need to terminate the pregnancy. 2. Vaginitis: patients with vaginitis mostly show abnormal color of vaginal secretion, and may also have the symptom of small amount of vaginal bleeding, accompanied by vaginal itching, odor and so on. At this time, pregnant women should pay attention to the cleanliness and care of intimate parts, change underwear, pay attention to personal habits, and if necessary, local medication. If there is brown discharge and a small amount of blood in the 11th week of pregnancy, the pregnant woman should go to the obstetrics and gynecology department of the hospital in time to improve the relevant examination, to clarify the cause, and to carry out further treatment.