The brown discharge caused by physiological reasons for more than 30 days of pregnancy does not need to be dealt with, when caused by preeclampsia, medication is needed to protect the fetus, ectopic pregnancy caused by the need for conservative or surgical treatment. 1. Physiological reasons: after pregnancy, some women will have a small amount of vaginal bleeding at the time of fertilization of the egg, which can be manifested as vaginal flow of brown discharge, which is a normal physiological phenomenon, progesterone and blood HCG (human chorionic gonadotropin) levels are normal, do not need special treatment. 2. Pathologic causes: (1) preeclampsia: also cause vaginal flow of brown discharge, also accompanied by lower abdominal pain, but also combined with progesterone and HCG (human chorionic gonadotropin) levels, ultrasound is not a clear diagnosis can be appropriate rest, temporary observation, but when the ultrasound is clearly diagnosed, can be given by the doctor’s instructions to give progesterone and other medications to protect the fetus, but also to be on time to re-examined. (2) ectopic pregnancy: also cause irregular vaginal bleeding and lower abdominal pain, but ultrasound is not clearly diagnosed when the need for temporary observation, after a clear diagnosis according to the specific conditions can choose to follow the doctor’s advice to give methotrexate and other drugs for conservative treatment, open abdominal or laparoscopic surgical treatment. Clinical when pregnant more than 30 days brown discharge need to identify the cause under the guidance of the doctor, and timely treatment. In addition, the use of specific drugs need to be under the guidance of the doctor.