It is recommended that pregnant women take 1 hour each in the morning, midday and evening to count their fetal movements at bed rest, each time lasts for 1 hour, and multiply it by 4 that is 12 hours of fetal movements. If the fetal movement is suddenly frequent, suddenly reduced or <3 times per hour, you should be alert to the occurrence of intrauterine distress, which often endangers the life of the fetus 12-24 hours after the disappearance of fetal movement, so we should teach pregnant women to count fetal movement after 28 weeks, feel the regularity and terminate the pregnancy in time when the fetal heart still exists after the fetal movement is reduced or disappeared. It can save the life of the fetus in intrauterine distress.