Under normal circumstances, the placenta at 24 weeks of pregnancy should be level 0, while the placenta level 1 belongs to the basic maturity of the placenta, which should be between 29 and 36 weeks of pregnancy, so the placenta level 1 at 24 weeks of pregnancy belongs to the placenta maturing too early. Although the placenta level 1 is the best quality of the placenta, there is not the slightest calcification and vascular occlusion of the placenta leaflets, presenting a very fresh state, but still need to pay more attention during pregnancy to avoid rapid aging of the placenta. Premature aging of the placenta is mainly related to smoking of the pregnant mother, high blood pressure during pregnancy, low amniotic fluid or the application of certain drugs during pregnancy, such as heparin and aspirin. Premature aging of the placenta will affect the blood supply to the fetus, leading to fetal developmental delay or intrauterine oxygen deprivation, etc. It is recommended to have regular checkups to monitor fetal movement and development. If the fetal movement, fetal heart and fetal development, umbilical artery blood flow are normal, you can continue to observe, placenta 1 adherence to 36 weeks is best. Exercise in moderation during pregnancy to avoid high blood pressure and blood sugar, and take reasonable calcium supplements. During pregnancy, you should take pregnancy checkups on time, pay close attention to the development of placenta, fetal movement, and testing amniotic fluid. Keep resting on the left side to ensure the blood supply to the placenta. If necessary, you can consider daily inter-terminal oxygen, or apply nutritional drugs under the guidance of the doctor, in order to avoid ischemia and hypoxia in the fetus.