Placental maturity grade 1 at 24 weeks is basically normal. The ultrasound report of late pregnancy usually shows the placenta grading, which usually includes grade 0, 1, 2 and 3. Usually the placenta is grade 0 before 28 weeks of pregnancy, between 29 and 36 weeks the placenta is grade 1, around 36 weeks the placenta is grade 2, and around 36 and 40 weeks of pregnancy the placenta can be grade 2 or 3. Generally speaking, a grade 0 placenta represents immature placenta, a grade 1 placenta represents basic fetal maturity, a grade 2 or higher placenta indicates that the fetus is mature, and a grade 3 placenta indicates that the placenta is mature and tends to age, and continuing pregnancy will affect the function of the placenta, for example, leading to a decrease in the ability of the placenta to transport oxygen and nutrients, which is not conducive to the absorption of nutrients by the fetus, and may even lead to fetal danger, so at this time, it is generally recommended to have a cesarean section or to induce labor. Therefore, Caesarean section or induced labor will be recommended. So 24 weeks placental maturity level 1 can be said to be basically normal, discretionary calcium supplementation, in case the placenta will be prematurely matured in the late maternity checkups, resulting in placental aging, but do not worry too much, regular maternity checkups, if any discomfort timely consultation, late maternity checkups if the placenta suggests level 3 increase the number of maternity checkups or hospitalization assessment, so as not to affect the fetus.