Fetal movement is particularly active may be a normal physiological response, fetal stimulation, intrauterine distress and other reasons. 1. Normal physiological response: fetal movement during pregnancy is a normal phenomenon, pregnant women around 28-34 weeks of pregnancy, when the fetus is larger, more amniotic fluid, fetal activity space is sufficient, then the pregnant woman will feel the fetus is more active, this is a normal physiological phenomenon. 2. Fetal stimulation: pregnant women are mentally stimulated, pregnant women overworked, loud sound stimulation can cause active fetal movement. When pregnant women eat, the blood sugar in the body rises, the fetus absorbs enough nutrients, and the fetus will also be active. 3. Fetal intrauterine distress: due to maternal causes such as gestational hypertension, gestational diabetes mellitus, placental causes such as placenta previa, placenta praevia, etc., umbilical cord causes such as umbilical cord entanglement, umbilical cord kinks, etc., which can lead to intrauterine oxygen deprivation, in the early stage of intrauterine oxygen deprivation, there are frequent fetal movements, and then the fetal movement decreases and other symptoms. Active fetal movement requires timely consultation, complete examination under the guidance of the doctor to find out the specific situation and give appropriate treatment.