The fetal movements can be felt at around 18 weeks of pregnancy in menstruating women and at around 20 weeks of pregnancy in primiparous women. The number of fetal movements can reflect the well-being of the fetus in the mother’s body, so it is very important, and patients are advised to start counting fetal movements after 28 weeks. Since the fetus also alternates between sleep and activity, the mother should count the fetal movements when the fetus is moving more frequently, 3-5 times an hour is normal. As the fetus grows, the space inside the mother’s body is gradually reduced, and the fetus’ activities are restricted, so the number of fetal movements will be significantly reduced. It is recommended that the mother count the fetal movements 3 times a day, preferably 3 times in the morning, midday and evening, between 2-3 times an hour is normal, within 2 hours must be more than 6 times, less than 6 times indicates the possibility of fetal hypoxia or other abnormalities, and must promptly consult a doctor.