Early pregnancy with brown discharge but no pain may be a normal physiological phenomenon, but there may also be abnormal phenomena (such as pre-miscarriage, etc.). 1. Physiological phenomenon: When the egg and sperm combine in the fallopian tube, a fertilized egg will be formed, which then moves to the uterus to implant and develop into an embryo. Some women do not have any feeling or phenomenon when they are implanted in the uterus. However, due to large individual differences, a few women will have a small amount of brown secretion discharged from the vagina, which can be relieved on its own and does not require any special treatment. 2. Pre-eclampsia: women will have a small amount of brown vaginal discharge, may or may not be accompanied by abdominal pain, most patients after rest, the symptoms disappeared, can continue the pregnancy, should be under the guidance of the doctor for fertility preservation treatment. If the bleeding increases or the pain in the lower abdomen is severe, it will progress to unavoidable miscarriage. In addition, there are other reasons that can cause early pregnancy with brown discharge but no pain normal phenomenon, it is recommended to go to the hospital in a timely manner, after clarifying the cause of the disease, follow the doctor’s instructions for targeted treatment.