Placental abruption in the first pregnancy may also occur in the second pregnancy, and pregnant women with a history of placental abruption have a significantly higher risk of recurrent placental abruption. Placental abruption is the partial or total detachment of the normally positioned placenta from the uterine wall after 20 weeks of gestation before delivery of the fetus, with a prevalence of about 1% in pregnant women. If a pregnant woman has a placental abruption in her first pregnancy, the chances of recurrent placental abruption in her second pregnancy are also elevated. Placental abruption is associated with hypertensive disorders during pregnancy, trauma, advanced age and multiple births, smoking, drug use, and assisted reproduction, and pregnant women with these risk factors need to be extra vigilant. If symptoms such as vaginal bleeding, abdominal pain and uterine pressure occur in the middle to late stages of pregnancy, timely medical examination is required, and if placental abruption is present, active treatment is needed under the guidance of the doctor.