Fetal trembling fetal movement is a normal fetal movement and is not a lack of oxygen. The fetal movement is caused by the fetus impacting the uterine wall during its activities such as reaching and kicking in the uterine cavity. The strength and speed of the movement can reflect the state of the fetus in the uterine cavity. There are many different forms of fetal movement, but the trembling fetal movement is a normal fetal movement, which mainly occurs when the pregnant woman takes a bath, eats, before going to sleep, listens to music and speaks to the baby. As long as the frequency of fetal movement is normal, regular and rhythmic, no obvious abnormal changes, excluding the fetus has a lack of oxygen, most of the fetal movement is normal. Therefore, pregnant women do not need to be overly worried or anxious about trembling fetal movements. If the fetal movement is too frequent, it is abnormal and there may be fetal hypoxia in utero, so you need to go to the hospital in time.