Brown discharge of pregnancy may be caused by the fertilization of the egg, preeclampsia, placenta praevia, gynecological diseases, and is handled through observation, fertility preservation treatment, treatment of inflammation and other measures. 1. Fertilized egg implantation: If the brown discharge of pregnancy occurs in the time period of fertilized egg implantation, it is because the trophoblast cells penetrate into the 1/3 muscle layer and blood vessels in the uterine lining in the 6~7 days after fertilization, which may lead to a small amount of bleeding, manifested as brown discharge, which is a physiological phenomenon, and it can be observed first, without special treatment. 2. Pre-eclampsia: brown discharge within 28 weeks of pregnancy may be caused by pre-eclampsia, you can go to check the causes of pre-eclampsia, such as the body of the progesterone hormone deficiency, you can intramuscular injection of progesterone or oral dydrogesterone tablets and other medications. 3. Placenta praevia: After pregnancy, the placenta bed position is relatively low, the lower edge of the placenta covers the cervical opening for the placenta praevia, the placenta and the uterine wall may be a small amount of brown secretion discharged, the fetus is immature to pay attention to the treatment of fetal preservation, usually pay more attention to bed rest, contractions inhibit the use of magnesium sulphate, aminomethylenecarbamate and other drugs to stop bleeding. 4. Gynecological diseases: pregnancy brown discharge may be caused by gynecological diseases, such as vaginitis, cervicitis patients, such patients are recommended to go to the hospital to check the cause of the disease, and then targeted use of related drugs, such as clotrimazole tablets, nifurtimox and so on. The reason for the brown discharge after pregnancy is more, it is recommended to go to the hospital to check and then targeted treatment, the above drugs used in accordance with the doctor’s instructions.