Fetal movement is usually felt by pregnant women as early as 16-18 weeks of pregnancy, with some individual variation. Fetal movement is the impact of the fetus on the wall of the uterus when it is moving in the uterus, which can be felt by the pregnant mother. Generally speaking, the earliest fetal movement is perceived by pregnant women at 16-18 weeks of pregnancy, with some individual differences. Relatively experienced mothers, such as those in their second pregnancy, may be able to feel fetal movement at 16 weeks of pregnancy. Thin pregnant mothers are also relatively easy to sense fetal movement, the most common is around 18 weeks of pregnancy; there are some fat pregnant women, belly fat layer is thicker, may be around 20 weeks of pregnancy to sense fetal movement. Fetal development under normal circumstances, before 20 weeks of pregnancy will appear fetal movement. If you are not aware of fetal movement after 20 weeks of pregnancy, you must tell your doctor in time and undergo fetal heart rate monitoring and fetal ultrasound if necessary to determine the growth and development of the fetus. Fetal movement observation in the second trimester is very helpful in understanding the health status of the fetus. Under normal circumstances, fetal movement occurs 3-5 times per hour and about 30-40 times in 12 hours. Significantly reduced or too frequent fetal movements are abnormal and need to be seen as soon as possible.