If a woman has brown leukorrhea discharge after intercourse, it is often considered to be contact bleeding after intercourse caused by local cervical problems, and if brown discharge occurs during pregnancy, it should be considered to be caused by pre-eclampsia, etc. If a woman has abnormal brown discharge after intercourse during non-menstrual period, the most common cause is due to local cervical problems, such as common cervical The most common cause of abnormal brown discharge is due to localized cervical problems, such as common cervical erosion, cervical polyps, cervical intraepithelial neoplasia, and even cervical cancer. If the woman is having intercourse during ovulation, it should also be considered that the fluctuation of estrogen during ovulation decreases, resulting in a small amount of endothelial peeling and causing ovulatory bleeding. The bleeding may last for 3 to 5 days, but usually not more than 7 days. At the same time, there will be obvious egg-white-like streaked leucorrhea, and since it is during ovulation, you should go to the hospital for ultrasound and internal gynecological examination to confirm the cause of the vaginal bleeding and then treat the symptoms. If a woman has abnormal brown discharge during pregnancy, since she is already pregnant, she usually does not have menstruation, so it is often due to the low progesterone in the first trimester of pregnancy, resulting in a small amount of endometrium flaking and causing preterm miscarriage, or the fertilized egg does not settle in the uterine cavity, but outside the uterus, and then miscarriage occurs due to stunted growth. Therefore, when a woman has brown discharge, she should go to the hospital for ultrasound and internal examination to confirm the specific cause of the bleeding, and then carry out symptomatic treatment.