Do 4D fetus is always lying on its side may be the reason that the fetus is in a sleep state, you can help the fetus to improve the degree of excitement by stroking the abdomen, more walking and other ways. 1. Stroke the abdomen: the fetus is always lying on its back may be in a sleep state, this situation can be stimulated by stroking the pregnant woman’s belly to stimulate the fetus, so that the fetus to carry on the activities, in order to facilitate the examination. 2. more walking: do 4d fetal always lying down, then the pregnant woman can choose to go up and down the stairs or appropriate more walking, to promote the excitement of the fetus. In the 4-dimensional examination, pregnant women are not required to fasting, so you need to eat and then go to the examination, so as not to wait too long will lead to hypoglycemia and other reactions. It is also recommended that pregnant women should take regular pregnancy tests during pregnancy, and ensure comprehensive nutritional intake, and seek medical attention if there are any abnormalities.