4D babies with their backs turned want to turn back, it is recommended that pregnant women exercise appropriately and change their position, which may be able to prompt the baby to turn back. It is relatively common for a pregnant woman to have her baby’s back turned during a 4D ultrasound. Pregnant women are advised to move appropriately before the 4D ultrasound, which may help the baby to turn around. Pregnant women should also relax their mind before the 4D ultrasound, keep a pleasant mood, should not be angry or nervous, also conducive to a smooth examination. Pregnant women can properly rub their abdomen or change their position before the 4-D ultrasound examination, and the baby will feel it and thus change its position to achieve the purpose of cooperating with the examination. Pregnant women can consult the doctor for ways to improve the baby’s posture if it is not right during the 4D ultrasound examination.