If the frequency of fetal movement is usually more, you can not worry too much, but if there is a significant increase compared to the usual, it is an abnormal performance, we should consult a doctor in time for examination. The fetal movement during this period has not yet formed a regular pattern, basically, the fetal movement frequency should be consistent every day. In addition, maternal movement, posture, emotions, as well as external strong sound, light stimulation and abdominal touch, etc., can cause changes in fetal movement, such as sitting or lying posture of the pregnant woman makes the fetus feel uncomfortable, fetal movement will also be transiently more frequent. Although the fetal movement has not yet formed an absolute pattern at 22 weeks, but we should pay attention to close observation, if the fetal movement suddenly appears significantly increased, it is recommended to go to the hospital in time to rule out the possibility of intrauterine hypoxia.