Frequent fetal movement in 5 months of pregnancy may be a normal physiological phenomenon, or it may be caused by fetal hypoxia and other pathological factors, which need to be combined with the frequency of fetal movement and fetal heart to determine. Common in the following cases: 1, physiological phenomenon: 5 months pregnant fetal movement sometimes, sometimes no, sometimes more, sometimes less, pregnant women after meals for the fetus to deliver enough nutrition, fetal excitement, frequent fetal movement. In addition, pregnant women at night after bathing, warm water stimulation, promote blood circulation, pregnant women physical and mental pleasure, this pleasant mood will feel to the fetus, increase fetal movement, making frequent fetal movement. Some fetuses are born to move, 5 months pregnant, frequent fetal movement, is also a normal phenomenon; 2, pathological factors: 5 months pregnant, a sudden increase in fetal movement, frequent fetal movement, may suggest the occurrence of intrauterine fetal hypoxia, it is recommended to go to the hospital in a timely manner, improve fetal heart monitoring and fetal ultrasound, to understand whether there is intrauterine fetal hypoxia, timely oxygen therapy. Pregnant women can choose to lie on the left side, which is conducive to the supply of oxygen to the fetus, and alleviate the baby’s intrauterine hypoxia.