Brown discharge before and after menstruation is a small portion of the endometrium peeling off, manifested as brown vaginal discharge, which is a normal phenomenon. Women will have a small amount of vaginal bleeding before and after menstruation, when the amount of bleeding is relatively small, the blood stays in the uterine cavity and vagina, and it will become dark brown or coffee color under the effect of the vaginal environment, meanwhile mixing with part of the leukorrhea to be discharged, which is a normal phenomenon. Before and after the period you need to do a good job of personal hygiene, carefully wash the vulva and perineum, keep the local clean to prevent infection. If there is brown discharge for more than seven days before and after menstruation, it is not normal. It is recommended to go to the hospital for hormone level measurement and gynecological ultrasonography to determine whether it is related to endocrine disorders according to the results of the examination.