Brown discharge on the 32nd day of pregnancy may be caused by bleeding at the time of implantation, preeclampsia, cervical polyps and other reasons. 1. Bleeding during implantation: some pregnant women may experience a small amount of brown vaginal discharge when the fertilized egg is implanted, which usually lasts for 3-4 days, and the progesterone and blood HCG (human chorionic gonadotropin) tests are normal, this is a normal physiological phenomenon that does not need to be treated. 2. Pre-eclampsia: The symptom of a small amount of brown vaginal discharge, accompanied by lower abdominal pain, can be combined with progesterone and blood HCG tests to assist in the diagnosis. Ultrasound examination can not be clear intrauterine pregnancy, can be appropriate rest, temporary observation. However, those who have a clear intrauterine pregnancy need to be treated with fertility preservation. 3. Cervical polyp: It may also have the symptom of small amount of brown vaginal discharge, not accompanied by abdominal pain, and can be diagnosed by ultrasound and gynecological examination. During pregnancy, pay attention to rest, at the same time should be relaxed, avoid tension, anxiety, any discomfort should be timely to the hospital, the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.