A small amount of brown discharge in early pregnancy may be caused by physiological reasons, or may be caused by pathological reasons, such as miscarriage, ectopic pregnancy and so on. 1. Physiological reasons: brown discharge in early pregnancy may be due to the female body secretion of chorionic gonadotropin, so that the endometrium proliferation, shedding, shedding of endometrial debris mixed with increased vaginal secretion from the vagina, if too long stay in the vagina, can be oxidized to become brown, usually this is a normal physiological phenomenon, do not need to be treated. 2. Pathological causes: (1) Miscarriage: If a small amount of brown discharge occurs in early pregnancy, it may also be miscarriage, and it is recommended to go to the hospital in time and make a clear diagnosis through ultrasound examination. (2) Ectopic pregnancy: If there is brown discharge in early pregnancy, accompanied by abdominal distension, tingling and other uncomfortable symptoms, we need to consider the possibility of ectopic pregnancy. If ectopic pregnancy is diagnosed in early pregnancy, it can be treated with medication through methotrexate, mifepristone and other drugs as prescribed by doctors; surgical treatment includes tubal pregnancy surgery or cesarean section. If the patient has a lot of brown discharge, it is recommended to go to the hospital in time for examination, to clarify the cause of the disease, and then follow the doctor’s instructions to deal with the treatment.