There are several reasons for brown discharge after pregnancy: i. Factors with fetus, probably preterm miscarriage, less vaginal bleeding and light abdominal pain at this stage. Second, ectopic pregnancy, which occurs when vaginal bleeding occurs around 40 days after menopause, mostly accompanied by vague pain, distension and cramping in the lower abdomen. Third, when suffering from gravida, pregnancy bleeding occurs later than miscarriage and ectopic pregnancy, mostly occurring around the third month of pregnancy, and all three cases should be promptly checked at the hospital. The appearance of brown discharge and maternal factors, such as suffering from vaginitis, cervical erosion, cervical polyps, endometrial lesions, tumors, etc. may flow brown discharge, if accompanied by vulvar itching symptoms, you should promptly go to the hospital for routine leucorrhea examination to prevent the appearance of vaginitis, which needs to be treated in a timely manner so as not to cause upstream infection. To sum up, no matter which cause it is caused by, you should go to the hospital for diagnosis and treatment in time, don’t delay the condition.