Fetal movement usually occurs at 20 weeks, or about 5 months, but it varies between primigravida and metigravida and among pregnant women of different sizes. Fetal movement can be touched or felt in the abdomen at 18-20 weeks for primiparous women, and it occurs earlier than for primiparous women at about 16-18 weeks for menstruating women. Meanwhile, the time of fetal movement is also different for pregnant women of different body types. Some pregnant women with a thin layer of abdominal fat may experience fetal movement at 18 weeks, while pregnant women with thicker abdominal fat may have less noticeable fetal movement, and pregnant women may feel fetal movement at a later stage. In addition, the frequency of fetal movement is also different in different weeks of pregnancy, 28-34 weeks when the amniotic fluid is more, the amplitude of fetal activity is larger, the fetal movement is obvious; 34 weeks after the gradual increase in fetal size, amniotic fluid decreases, the number of fetal movements may be reduced. In conclusion, if the fetus does not move or the number of fetal movements decreases during pregnancy, women should go to the Obstetrics and Gynecology Department as soon as possible.