At 10 weeks, the baby usually does not move in the belly because the fetus is in its first human form at this time. Since there is already a visible fetal heartbeat at 10 weeks of pregnancy, the original fetal heartbeat can be seen during an ultrasound, but at this time the fetus is taking on a human form, so there is usually no fetal movement. Fetal movement usually occurs after 16 weeks of pregnancy, when the fetus has already taken shape. Fetal movements are usually felt after 20 weeks of pregnancy, slightly earlier in women in labor than in women in their first trimester, and can sometimes be seen or detected during abdominal examination. Fetal movement with the progress of pregnancy gradually enhance, to 32 ~ 34 weeks of pregnancy reached the peak, after 38 weeks of pregnancy gradually reduced. In early pregnancy pregnant women should pay attention to oral folic acid, timely to the hospital register, to do regular maternity checks, early pregnancy is the sensitive period of fetal development, to avoid the stimulation of harmful factors.