Three-dimensional a quick pass may and pregnant women pregnancy week, fetal movement and so on have a relationship, need to choose a reasonable examination time, pay attention to the fetal movement situation, to promote the smooth passage, need to be specifically analyzed. 1. Pregnant women’s gestational week: to do three-dimensional to choose the appropriate gestational week, if the gestational week is too large, as the fetus continues to grow, the fetus in the uterine cavity activities are restricted, it will affect the smooth passage of the examination, so you need to choose the right time for the examination. 2. Fetal movement: If the fetus has little movement and stays in one position, it will affect the smooth passing of the examination. Pregnant women can choose to exercise appropriately before the examination to increase the movement of the fetus, so that the examination can pass more smoothly. Don’t be nervous during the 3D examination, relax and cooperate with the doctor’s operation. Appropriate meals or activities for pregnant women can induce fetal movement and improve the success rate of the examination. If there is any abnormality in the result after the examination, you need to go to the hospital for medical treatment in time.