Normally, the placenta should be level 0 at 24 weeks of gestation, while placenta level 1 belongs to the basic maturity of the placenta, which should be between 29 and 36 weeks of gestation, so placenta level 1 at 24 weeks of gestation belongs to premature maturation of the placenta. Although placenta level 1 belongs to the best quality period of placenta, the placental lobules do not have the slightest calcification and vascular occlusion, presenting a very fresh state, but still need to pay more attention during pregnancy to avoid rapid aging of placenta. Premature placentation is mainly associated with maternal smoking, hypertension during pregnancy, low amniotic fluid or application of certain drugs during pregnancy, such as heparin and aspirin. Premature placenta can affect fetal blood supply and lead to fetal growth retardation or intrauterine hypoxia, etc. It is recommended to monitor fetal movement and development by regular maternity checkups. If fetal movement, fetal heartbeat as well as fetal development and umbilical artery blood flow are normal, you can continue to observe, and it is best to insist on placenta level 1 until 36 weeks. During pregnancy, you should exercise moderately, avoid high blood pressure and blood sugar, and take reasonable calcium supplements. During pregnancy, you should have regular pregnancy checkups, pay close attention to placental development, fetal movement and detection of amniotic fluid. Maintain daily rest in the left lateral position to ensure placental blood supply. If necessary, consider daily inter-terminal oxygen intake or apply nutritional drugs under the guidance of the doctor to avoid fetal ischemia and hypoxia.