Gray marks on the pregnancy test paper and brown discharge may be caused by the onset of menstruation, implantation bleeding, and pre-miscarriage. It can be treated by observation, rest and timely medical treatment. 1. The onset of menstruation: If the woman fails to conceive, before the onset of menstruation, there may be gray marks on the pregnancy test paper and brown secretions, and the woman is mostly without other uncomfortable symptoms. At this time, observation can be. 2. Bleeding from implantation: when the fertilized egg is implanted, it may lead to a little bleeding in the uterine cavity, resulting in gray marks on the pregnancy test paper and brown discharge, and some women also have abdominal pain. At this time, you can check the HCG in the blood to determine whether you are pregnant or not. 3. Pre-eclampsia: If a woman has abdominal pain, low back pain and other symptoms, it may indicate the presence of pre-eclampsia. At this time, should pay attention to bed rest, if abdominal pain and other symptoms can not be improved, can follow the doctor’s advice to take dextroprogesterone tablets and other anti-fetal treatment. If there is a gray mark on the pregnancy test paper and brown secretion, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, to clarify the growth and development of the fetus.