In general, the normal fetal movement in 20 weeks of pregnancy is 3-5 times/hour, and can reach 30-40 times in 12 hours. The factors that affect the number of fetal movements on a daily basis include the following two points: 1. The fetus’ own physique: if the fetus is more robust, the fetal movements will be more and more powerful. If the fetus is thin and weak, the number and strength of fetal movements will also be weakened. As long as the fetal movement is very regular, there is no obvious change, it means it is safe; 2, pregnancy week change: after entering the late pregnancy, the fetus in the uterus activity space is very small, fetal movement will also be reduced. By the time of delivery, the fetus hardly moves much. Pregnant women should not worry, as these are normal pregnancy changes. During pregnancy, pregnant women need to closely observe the fetal movement, if there is an abnormal phenomenon, such as a sudden increase in the number of fetal movements and more violent; or a sudden decrease in fetal movement and weakened intensity, the above is often due to fetal hypoxia, it is recommended to go to the hospital for ultrasound examination or under the guidance of the doctor for oxygen absorption to relieve abnormal symptoms. Pregnant women should usually increase nutrition in their diet, consume more food with high quality protein content, and do proper exercise to help the fetus develop and grow more healthily.