Generally nine weeks the baby is no fetal movement, as early as around 16 weeks of gestation some pregnant women can consciously to fetal movement. Fetal movement refers to the physical activity of the fetus, in nine weeks of gestation is also known as the embryo, at this time there is no fetal movement, the earliest can be around 16 weeks of gestation part of the pregnant woman can be conscious of the fetal movement, and with the increase in gestational weeks and gradually strengthened, most of the pregnant women will be around 20 weeks of gestation conscious of the fetal movement and to be 28 weeks of gestation after the counting of fetal movement, the normal fetal movement is ≥ 10 times / 2 hours. Fetal movement counting is the easiest way for pregnant women to self-evaluate the safety of the fetus in the womb. When there are <10 movements/2 hours or a 50% decrease in overall fetal movement, we should be highly alert to the possibility of fetal hypoxia and go to the hospital in time for consultation, and perform relevant ultrasonography, such as fetal umbilical cord blood flow, biophysical scoring, etc., as well as fetal heart rate monitoring to assess the safety of the fetus and, if necessary, need to terminate the pregnancy in a timely manner.