Brown discharge on the tenth day of implantation may be caused by normal implantation, preeclampsia, ectopic pregnancy or other reasons. 1. Normal fertilized egg implantation: due to the embryo implantation process may also lead to a small number of endometrial capillary rupture, resulting in vaginal brown discharge, a small amount of this brown secretion is not accompanied by other abnormalities is also mostly a normal phenomenon. 2. Pre-eclampsia: If the bleeding is heavy, there is a possibility of pre-eclampsia. You need to follow the doctor’s advice to bed rest, observe the bleeding, do ultrasound to check the embryo, and take oral medication or hospitalization to keep the fetus in a timely manner if necessary. 3. Ectopic pregnancy: If the fertilized egg is deposited in a place other than the uterus, it may also lead to abnormal vaginal bleeding, which may be accompanied by abdominal pain or nausea, fainting and so on. 4. Other causes: If there are diseases such as cervical lesions or vaginitis, it may lead to brown discharge on the tenth day of transplantation. Brown discharge on the tenth day of transplantation may also have other causes, do not panic, nervous, relax, keep happy, timely medical exclusion of abnormalities, do a good job of review, avoid overwork, do not stay up all night and so on.