A decrease in fetal movement with a heartbeat may be a normal phenomenon without special treatment, if the 12-hour fetal movement is less than 20 times or less than 10 times, it is caused by intrauterine hypoxia, can be dealt with through oxygen, termination of pregnancy and other ways to deal with the specific need to comply with the doctor’s instructions. A heartbeat indicates that the fetus is alive in the uterus, and the decrease in fetal movement may be due to the fact that in the late stage of pregnancy, the fetus gradually develops and increases in size, the amount of amniotic fluid in the uterus decreases, the range of intrauterine activities becomes smaller, and the number of times the fetus moves also decreases, which is a normal condition, and there is no need to go for special treatment. There is a heartbeat but the fetal movement decreases, 12 hours of fetal movement less than 20 times or less than 10 times, suggesting that the fetus intrauterine hypoxia may be recommended to timely consult a doctor through ultrasound, fetal heart rate monitoring check, just a slight hypoxia can be improved through oxygen, more rest, left lateral position to improve, the degree of hypoxia is more serious, can be timely termination of pregnancy, specific need to follow the doctor’s advice! After pregnancy, we should pay more attention to observe the changes in the body, feel abnormal fetal movement need to consult a doctor in time.