Fetal movement represents the activity of the fetus’ body or limbs, and is closely monitored from the time the pregnant woman is able to perceive fetal movement after 16 weeks to 28 weeks, the number and frequency of fetal movements are used to assess whether the fetus has any abnormality such as lack of oxygen in the uterus. 1. Fetal movement is caused by fetal activity in the uterus, the earliest in the pregnancy of 12 weeks or so began to have limb activity, fetal movement reflects the neuromuscular development of the fetus to a certain extent, the primigravida generally in 18-20 weeks can feel the faint fetal movement, the pregnant woman generally began to feel the fetal movement in the 16th week, the specific perception of the time and the pregnant woman’s abdominal fat, the position of the placenta and so on there is a difference. 2. Generally from the 28th week of pregnancy, pregnant women need to closely monitor the fetal movement several times a day to fix three time periods, each time 1 hour to record the number of fetal movements, and then multiply the sum by 4 for the 12-hour fetal movement, fetal movement 30-40 times belong to the qualified. If there is fetal hypoxia, umbilical cord around the neck, etc., will lead to abnormal frequent fetal movement, fetal movement reduction or even disappear, need to consult a doctor to assess the rescue. Fetal movement is an important means of assessment and monitoring in the second trimester of pregnancy, pregnant women must carefully monitor the fetal movement, and if there is any abnormality, consult a doctor in time.