According to the month of gestation, 30 weeks of pregnancy is 7 and a half months of pregnancy. The timing of prenatal checkups is usually calculated according to the gestational months and weeks of pregnancy. The gestational month is calculated according to 28 days as 1 month, which means 4 gestational weeks as 1 month, and 10 months as 280 days for the whole pregnancy, so 30 weeks of pregnancy is 7 gestational months plus 2 weeks. However, if we calculate according to the natural month, the 30 weeks of pregnancy is 210 days, that is, 7 months of pregnancy, at this time, there will be a difference of half a month in the number of days between the two methods of calculating the medical gestational month and the natural month. The 30 weeks of pregnancy has reached the late stage of pregnancy, pregnant women need to regular regular maternity checkups, once every 2 weeks, each pregnancy checkup to measure weight, blood pressure and uterine height and fetal heart. In addition, pregnant women should pay attention to proper rest and exercise for at least 30 minutes a day with moderate exercise. At the same time, they should eat less and more meals and increase the intake of high-quality protein foods and fresh vegetables.