Generally speaking, the placenta will not be graded until the 27th week of pregnancy, so generally speaking, when a pregnant woman is 17 weeks pregnant, the first level of the placenta is normal, the first level of the placenta is immature. The first level of placenta is an immature placenta. 17 weeks placenta first level is normal, at this time the placenta ultrasound shows uniformity and consistency of moderate echoes, the placenta will gradually mature with the increase of the month, generally until the 27th week of pregnancy to reach the late stage of pregnancy, the placenta will reach the second level of grading. Therefore, generally speaking, pregnant women in 17 weeks of pregnancy, the placenta first level is normal, do not need to deal with too much. Pregnant women should take good care of their pregnancy and have regular checkups. As long as there are no obvious problems with the development of the fetus and the prenatal results are normal, then continued observation is sufficient. Pregnant women are advised to avoid excessive anxiety during pregnancy, and to seek timely medical attention and standardized treatment if they encounter abnormalities.