Four-dimensional generally refers to four-dimensional color ultrasound, the examination when the fetus does not move can be made to move through appropriate exercise, eating and other ways. Clinical advocacy of four-dimensional ultrasound examination when the fetal movement is obvious, which helps to observe the situation of the fetus in all aspects, in order to clearly diagnose the existence of cleft lip and palate, anencephaly, spina bifida, microcephaly, intestinal atresia, megacolon, and other congenital malformations and diseases. If the fetus does not move during the examination, pregnant women can appropriately make him move through simple exercises, such as walking slowly, going up and down the stairs, etc., to ensure that the examination is carried out smoothly. In addition to exercise, some pregnant women can eat appropriately, such as bread, milk, etc., and can also use their hands to touch or pat the abdomen to encourage the fetus to move. If you can’t get the fetus to move after several attempts, but the results of other pregnancy tests are normal, you can go to the doctor for another 4D ultrasound every other day or at intervals, and don’t worry too much. It is recommended that you visit a regular hospital for a 4D ultrasound to ensure the accuracy of the results. If the 4D ultrasound examination is abnormal, you can further do amniocentesis and other tests to confirm whether the fetus is malformed.