Placental implantation refers to the invasion of the uterine myometrium by the placenta, a process that usually occurs after the 16th week of pregnancy and can lead to severe bleeding or even endanger the life of the pregnant woman, requiring aggressive treatment. Placental implantation is a more dangerous disease in pregnancy, which often occurs in people with more miscarriages and cesarean sections. During pregnancy, the placenta is not on the uterine lining, but implanted in the myometrium, and this phenomenon usually occurs after the fourth month of pregnancy, i.e., after the 16th week, which may cause severe bleeding and requires active treatment. Women are advised to protect their health and reduce the number of abortions as well as cesarean sections to minimize serious pregnancy disorders. If abnormal bleeding during pregnancy occurs inadvertently, it is necessary to go to the hospital in time and take appropriate treatment as soon as possible.