Vaginal brown discharge, 1, can be caused by preeclampsia, the need for further examination of gynecological ultrasound, blood HCG, progesterone, according to the situation can be used to protect the fetus Ling capsule to stop bleeding. If the progesterone is low, you can supplement progesterone soft gelatin capsules treatment. At the same time to prohibit sexual intercourse, pay attention to rest, avoid strenuous exercise, regular pregnancy checkups. 2, can also be seen in the endometrial polyps caused by. In this case, you need to do further hysteroscopic endometrial polyp electrocution surgery, after the operation to send the pathology, according to the postoperative pathology, to decide how to treat the next. 3, can also be seen in the intrauterine ring downward displacement caused by. For this case, you need to clean the third day of menstruation to clean the seventh day of menstruation, the removal of the ring surgical treatment. 4, can also be caused by cervical polyps. In this case, you can perform cervical polyp removal surgery, and after the operation, send the pathology test, according to the pathology to decide the next step in the treatment. 5, can also be caused by uterine scar diverticulum, you need to check the gynecological ultrasound. If the gynecological ultrasound suggests that the uterine scar diverticulum may, need to do further hysteroscopy clear diagnosis.