The causes of reduced fetal movement in 23 weeks of pregnancy are generally divided into physiological and pathological. 1, physiological factors: 1, maternal factors: pregnant women’s bad mood, improper diet, posture changes, etc. may appear changes in fetal movement, such as pregnant women themselves do not eat on time, the intake of energy will be reduced, the supply of energy to the fetus will also be reduced accordingly, there is a temporary reduction in fetal movement; 2, fetal factors: the fetus in the uterine cavity will gradually form its own sleep cycle, when the fetus is awake fetal movement will be relatively more. When the fetus is quiet or sleeping, the fetal movement will be reduced accordingly, and the fetal movement will be the least at 2-3 pm in a day. The fetal movement will be reduced if the pregnant woman has fever, gestational hypertension and other diseases, so that the placenta and uterine blood flow will be reduced, in addition, if the pregnant woman takes sedative drugs, fetal movement will also be reduced, after stopping the drugs can generally be restored; 2, the fetal own factors: such as the umbilical cord around the neck, placental hypofunction, etc., when the umbilical cord is squeezed, will lead to obstruction of the umbilical cord blood flow In serious cases, it will lead to fetal hypoxia and reduced fetal movement. Generally, as long as the fetal movement is regular every day, compared to the change is not large, considered normal, close observation can be, at the same time, pay attention to relax, avoid excessive excitement, if you feel that the fetal movement has obvious abnormalities, it is recommended to go to the hospital in a timely manner to check, clear reasons.