After pregnancy, it is not normal for the leukorrhea to appear brown. In the early stages of pregnancy, the leukorrhea is brown, the main consideration is a preeclampsia, biochemical pregnancy, or ectopic pregnancy these three conditions. Patients need to dynamically observe the changes in blood chorionic gonadotropin, progesterone, and ultrasound, as well as observe the patient’s vaginal bleeding, to determine which condition is causing the problem, and treat the symptoms. If it is a preeclampsia, it is necessary to preserve the fetus; if it is an ectopic pregnancy, it is necessary to treat it conservatively with medication or surgical excision; if it is a biochemical pregnancy, it is not necessary to treat it. If it is in the middle or late stage of pregnancy, the main consideration is that there may be cervical lesions, low position of the placenta, or it may be caused by preterm labor. Therefore, patients need to do ultrasound, gynecological internal examination to observe which specific conditions cause bleeding, and then according to the specific circumstances of the treatment.